# Self hosted app search .Net Core UI **URL:** \ **Category:** Elastic Search\ **Tags:** elastic-app-search\ **Created:** [January 27, 2020, 10:34am UTC](https://discuss.elastic.co/t/self-hosted-app-search-net-core-ui/216633 "2020-01-27T10:34:32Z")\ **Posts on this page:** 1\ **Showing post:** 15
**Author:** ![JasonStoltz](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jasonstoltz/32/49893_2.png) [@JasonStoltz](https://discuss.elastic.co/u/JasonStoltz)\ **Post date:** [March 5, 2020, 12:00pm UTC](https://discuss.elastic.co/t/self-hosted-app-search-net-core-ui/216633/15 "2020-03-05T12:00:06Z")
The guide for combining filters is here: [https://swiftype.com/documentation/app-search/api/search/filters#combining-filters](https://swiftype.com/documentation/app-search/api/search/filters#combining-filters) A similar question was asked recently as well: [Error: [400] Filters contains an invalid set of keys for object inside of field: filters root; can only have clauses or a single field name](https://discuss.elastic.co/t/error-400-filters-contains-an-invalid-set-of-keys-for-object-inside-of-field-filters-root-can-only-have-clauses-or-a-single-field-name/221124/2) --- _[View the full topic](https://discuss.elastic.co/t/self-hosted-app-search-net-core-ui/216633)._