I cann't search Persian (Farsi) in es

Hi,
The language of my documents is Persian.
Now when I search with Persian language , I don't get any results.
my index name is : 'course_cats'
and results of GET 'http://localhost:9200/course_cats' is as follow :
{
"course_cats": {
"aliases": {},
"mappings": {
"_doc": {
"properties": {
"descriptions": {
"type": "text",
"analyzer": "persian"
},
"id": {
"type": "integer"
},
"name": {
"type": "text",
"analyzer": "persian"
},
"parent": {
"type": "integer"
}
}
}
},
"settings": {
"index": {
"number_of_shards": "5",
"provided_name": "course_cats",
"creation_date": "1544430822848",
"analysis": {
"filter": {
"persian_stop": {
"type": "stop",
"stopwords": "persian"
}
},
"analyzer": {
"persian": {
"filter": [
"lowercase",
"decimal_digit",
"arabic_normalization",
"persian_normalization",
"persian_stop"
],
"char_filter": [
"zero_width_spaces"
],
"tokenizer": "standard"
}
},
"char_filter": {
"zero_width_spaces": {
"type": "mapping",
"mappings": [
"\u200C=> "
]
}
}
},
"number_of_replicas": "1",
"uuid": "rs23knx2QWCEPGbEI5OYpQ",
"version": {
"created": "6040199"
}
}
}
}
}

pls help me!

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