A CLUE

Chinese 

按圖索驥 (by following up a clue, try to locate sth). (various references)

Czech

nemít ani ponìtí (not to have a clue). (various references)

Finnish

päästä jäljille (get a clue). (various references)

Greek 

ανίδεος (without a clue, without the slightest idea). (various references)

Hungarian

a rendőrség nyomon van (the police have got a clue). (various references)

Japanese Kanji 

端緒 (beginning, start). (various references)

Japanese Katakana 

たんしょ (beginning, defect, demerit, disadvantage, start, weak point), たんちょ (beginning, start). (various references)

Pig Latin

aay ueclay.(various references)

Russian 

наводить на след (give a clue). (various references)