Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
hanh tai » thanh tai, hang tai, han tai
ky lang » ky dang, ky tang, tay lang
hieu va » hieu qua
va hanh » van hanh, va thanh, va danh
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
te bai » te bao, te tai, te ban
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te bai ((ky lang) OR (ky nang)) xa hoi. ((hieu va) or (lieu va)) cham luc va hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te bai ((ky lang) OR (ky nang)) xa hoi. ((hieu va) OR (lieu va)) cham luc va hanh tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te bai ((ky lang) OR (ky nang)) xa hoi. ((hieu va) or (lieu va)) cham luc va hanh tai cua tre".
• Adding a wildcard symbol may retrieve word variants: te bai ((ky lang) OR (ky nang)) xa hoi. ((hieu va) or (lieu va)) cham luc va hanh tai cua tre*.