Perhaps you should try some spelling variations:
tay lang » tai lang, tay tang, tay quang
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
qua cau » quan cau, qua cac, qua ca
cau luc » cau truc, cau phuc
luc van » luoc van, luu van, duc van
y lang » o lang, _ lang, yen lang
cua tu » cua tuc, cua su, cua cu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((y lang) or (tay lang)) xa hoi. hieu qua cau luc van hanh vi ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y lang) OR (tay lang)) xa hoi. hieu qua cau luc van hanh vi ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: tu sach ((y lang) or (tay lang)) xa hoi. hieu qua cau luc van hanh vi ((cua te) or (cua tu))*.