Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
tay lang » tai lang, tay tang, tay quang
te sach » toc sach
va nang » van nang, da nang, cam nang
va hang » van hang, va lang, va hanh
va cham » va chat, va tham
hieu va » lieu va, hieu qua
y lang » o lang, _ lang, yen lang
cuc te » cua te, cuc thue, cuc tieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((y lang) or (tay lang)) xa hoi. hieu va cham luc ((va hang) OR (va nang)) tai cuc te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y lang) OR (tay lang)) xa hoi. hieu va cham luc ((va hang) OR (va nang)) tai cuc te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y lang) or (tay lang)) xa hoi. hieu va cham luc ((va hang) OR (va nang)) tai cuc te*".