Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
tang lap » sang lap, tan lap, tang ap
su sach » so sach, vu sach
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
hieu ve » hieu van
lap hai » lap tai, lap lai, lap hoat
ky tang » ky nang, ky dang, kho tang
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua
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: ((su sach) or (vu khach)) ky tang lap hai. ((hieu ve) or (hieu va)) cam tuc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu khach)) ky tang lap hai. ((hieu ve) OR (hieu va)) cam tuc va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu khach)) ky tang lap hai. ((hieu ve) or (hieu va)) cam tuc va hanh vi cua te*.