Supported Google Languages via lr parameter

lr	Language
lang_ar	Arabic
lang_hy	Armenian
lang_bg	Bulgarian
lang_ca	Catalan
lang_cs	Czech
lang_da	Danish
lang_de	German
lang_el	Greek
lang_en	English
lang_es	Spanish
lang_et	Estonian
lang_tl	Filipino
lang_fi	Finnish
lang_fr	French
lang_hr	Croatian
lang_hi	Hindi
lang_hu	Hungarian
lang_id	Indonesian
lang_is	Icelandic
lang_it	Italian
lang_iw	Hebrew
lang_he	Hebrew
lang_ja	Japanese
lang_ko	Korean
lang_lt	Lithuanian
lang_lv	Latvian
lang_nl	Dutch
lang_no	Norwegian
lang_fa	Persian
lang_pl	Polish
lang_pt	Portuguese
lang_ro	Romanian
lang_ru	Russian
lang_sk	Slovak
lang_sl	Slovenian
lang_sr	Serbian
lang_sv	Swedish
lang_th	Thai
lang_tr	Turkish
lang_uk	Ukrainian
lang_vi	Vietnamese
lang_zh-CN	Chinese (Simplified)
lang_zh-TW	Chinese (Traditional)