Perhaps you should try some spelling variations:
vu khach » vu khanh, vay khach, cua khach
thai cua » than cua, tai cuc, tri cua
nang cai » nang cao, nang tai, nang cap
cam luc » cam xuc, cau luc
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
cai hoi » cau hoi, dai hoi, cai hoa
vu khac » vu kham, vu khanh, bui khac
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) OR (vu khac)) 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) OR (vu khac)) y nang cai hoi. hieu ve cam luc ((va hanh) OR (va danh)) thai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu khach) OR (vu khac)) 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) OR (vu khac)) y nang cai hoi. hieu ve cam luc ((va hanh) or (va danh)) thai cua tre*.