Perhaps you should try some spelling variations:
chat luc » chat xuc, chat lua, nhan luc
tang dai » tang tai, tang dan, lang dai
ky tang » ky nang, ky dang, kho tang
dai hoi » dai hoc, dai hai, dai moi
hieu vu » hieu ve, hieu su, dieu vu
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
tu sac » tu sach, tu san, tu bac
vi cua » vai cua, di cua
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: ((tu sac) or (tu cac)) ky tang dai hoi. ((hieu vu) or (hieu va)) chat luc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu cac)) ky tang dai hoi. ((hieu vu) OR (hieu va)) chat luc va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu cac)) ky tang dai hoi. ((hieu vu) or (hieu va)) chat luc va hanh vi cua te*.