Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
hanh tai » thanh tai, hang tai, han tai
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va
va hanh » van hanh, va thanh, va danh
tai cua » thai cua, tai cuc, tri cua
te sai » te tai, te bai, te lai
sai ky » sac ky
luc va » duc va, tuc va, loc va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sai ky tang xa hoi. ((hieu va) OR (hieu qua)) cham luc va hanh tai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sai ky tang xa hoi. ((hieu va) OR (hieu qua)) cham luc va hanh tai cua te".
• Adding a wildcard symbol may retrieve word variants: te sai ky tang xa hoi. ((hieu va) OR (hieu qua)) cham luc va hanh tai cua te*.