Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
nang cai » nang cao, nang tai, nang cap
thai cua » than cua, tai cuc, tri cua
cai hoi » cau hoi, dai hoi, cai hoa
hieu ve » hieu va, hieu van
cam luc » cam xuc, cau luc
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khach y nang cai hoi. hieu ve cam luc ((va hanh) or (va danh)) thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach y nang cai hoi. hieu ve cam luc ((va hanh) OR (va danh)) thai cua tre.
• Adding a wildcard symbol may retrieve word variants: vu khach y nang cai hoi. hieu ve cam luc ((va hanh) or (va danh)) thai cua tre*.