
Google Search Appliance: Search Protocol Reference Request Format 32
Automatic Language Filters
The Google Search Appliance automatically detects the language of each search query and returns
results in that language. For example, if a user submits a search query in Hungarian (lang_hu), results
are automatically returned in Hungarian.
The algorithm for automatically determining the language of a web document is not customizable. The
language of a document is determined primarily by the language used for the majority of the text in the
body of the document.
Note: Encoding schemes for the input and output of search requests are also important when you
provide international search. For more information on encoding, see “Internationalization” on page 34.
For more information on how language filtering works with Simplified Chinese and Traditional Chinese,
see “Language Filtering for Traditional and Simplified Chinese” on page 33.
The automatic language filters are:
Language Automatic Language Filter Name
Arabic lang_ar
Chinese (Simplified) lang_zh-CN
Chinese (Traditional) lang_zh-TW
Czech lang_cs
Danish lang_da
Dutch lang_nl
English lang_en
Estonian lang_et
Finnish lang_fi
French lang_fr
German lang_de
Greek lang_el
Hebrew lang_iw
Hungarian lang_hu
Icelandic lang_is
Italian lang_it
Japanese lang_ja
Korean lang_ko
Latvian lang_lv
Lithuanian lang_lt
Norwegian lang_no
Portuguese lang_pt
Polish lang_pl
Romanian lang_ro
Russian lang_ru
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