Perhaps you should try some spelling variations:
chat luc » chat xuc, chat lua, nhan luc
kho tang » cao tang
cua cau » cua cac, cua chu, cua cay
va hanh » van hanh, va thanh, va danh
su chat » su phat, du chat, so chat
hieu su » hieu sau, tieu su, hieu so
lai hoi » dai hoi, lai hoa, lai roi
ky dang » ky nang, ky danh
ky tang » ky nang, ky trong, tay tang
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua
tu sai » tu bai, tu san, tu cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ((ky dang) or (((ky tang) or (kho tang)))) lai hoi. hieu su chat luc va hanh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ((ky dang) OR (((ky tang) OR (kho tang)))) lai hoi. hieu su chat luc va hanh vi cua cau.
• Adding a wildcard symbol may retrieve word variants: tu sai ((ky dang) or (((ky tang) or (kho tang)))) lai hoi. hieu su chat luc va hanh vi cua cau*.