Perhaps you should try some spelling variations:
su sach » so sach, vu sach
va hanh » van hanh, va thanh, va danh
cam luc » cau luc
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
hieu ve » hieu van
lap hai » lap tai, lap lai, lap hoat
tan lap » toan lap, dan lap, tai lap
ty tan » ty van, ty tai, ty tap
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 ty tan lap hai. ((hieu ve) or (hieu va)) ((cam luc) or (cam xuc)) va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty tan lap hai. ((hieu ve) OR (hieu va)) ((cam luc) OR (cam xuc)) va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: su sach ty tan lap hai. ((hieu ve) or (hieu va)) ((cam luc) or (cam xuc)) va hanh vi cua te*.