# NEST: How to search Vietnamese character?

**URL:** <https://discuss.elastic.co/t/nest-how-to-search-vietnamese-character/79623>\
**Category:** Elasticsearch\
**Created:** [March 22, 2017, 5:11pm UTC](https://discuss.elastic.co/t/nest-how-to-search-vietnamese-character/79623 "2017-03-22T17:11:27Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![truc](https://avatars.discourse-cdn.com/v4/letter/t/9de0a6/32.png) [@truc](https://discuss.elastic.co/u/truc)\
**Post date:** [March 22, 2017, 5:11pm UTC](https://discuss.elastic.co/t/nest-how-to-search-vietnamese-character/79623/1 "2017-03-22T17:11:27Z")

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I want to search accent character in my language.  
For example: I want to find the word "siêu nhân" when i type "sieu nhan", "siêu nhan", "sieu nhân" or "siêu nhân".

I using NEST in my .net project, somebody help me? Sorry for my bad english.

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**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [March 22, 2017, 6:03pm UTC](https://discuss.elastic.co/t/nest-how-to-search-vietnamese-character/79623/2 "2017-03-22T18:03:29Z")

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Use an ascii folding token filter in your analyzer.

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**Author:** ![truc](https://avatars.discourse-cdn.com/v4/letter/t/9de0a6/32.png) [@truc](https://discuss.elastic.co/u/truc)\
**Post date:** [March 22, 2017, 8:44pm UTC](https://discuss.elastic.co/t/nest-how-to-search-vietnamese-character/79623/3 "2017-03-22T20:44:22Z")

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I don't know how to use token filter in asp,net (c#) code? Can you give me some document about NEST? Please..

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<div class="post-metadata">

**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [March 22, 2017, 9:19pm UTC](https://discuss.elastic.co/t/nest-how-to-search-vietnamese-character/79623/4 "2017-03-22T21:19:22Z")

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It's not related to Nest but all about configuration.

Have a look in documentation about how to create analyzers and apply them to mappings when you create the index.

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**Author:** ![anhlqn](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/anhlqn/32/5454_2.png) [@anhlqn](https://discuss.elastic.co/u/anhlqn)\
**Post date:** [March 23, 2017, 3:22am UTC](https://discuss.elastic.co/t/nest-how-to-search-vietnamese-character/79623/5 "2017-03-23T03:22:54Z")

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There's a Vietnamese Analysis plugin at [https://github.com/duydo/elasticsearch-analysis-vietnamese](https://github.com/duydo/elasticsearch-analysis-vietnamese). Not sure if it fits your need.

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<div class="post-metadata">

**Author:** ![truc](https://avatars.discourse-cdn.com/v4/letter/t/9de0a6/32.png) [@truc](https://discuss.elastic.co/u/truc)\
**Post date:** [March 23, 2017, 1:24pm UTC](https://discuss.elastic.co/t/nest-how-to-search-vietnamese-character/79623/6 "2017-03-23T13:24:59Z")

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Thank you, i did it. 😃

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**Author:** ![truc](https://avatars.discourse-cdn.com/v4/letter/t/9de0a6/32.png) [@truc](https://discuss.elastic.co/u/truc)\
**Post date:** [March 23, 2017, 1:26pm UTC](https://discuss.elastic.co/t/nest-how-to-search-vietnamese-character/79623/7 "2017-03-23T13:26:19Z")

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I know this plugin, but not what i need.

But i dit it, thank you. 😃

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [April 20, 2017, 1:26pm UTC](https://discuss.elastic.co/t/nest-how-to-search-vietnamese-character/79623/8 "2017-04-20T13:26:33Z")

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