Perhaps you should try some spelling variations:
tang lap » sang lap, tang ap, tang lao
so sach » so sanh, bo sach, co sach
danh vi » hanh vi, dinh vi, danh di
tan lap » toan lap, dan lap, tai lap
hieu va » lieu va, hieu qua
loc va » hoc va, luc va
vi cua » vai cua, di cua
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
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: so sach y ((tang lap) or (tan lap)) hai. hieu va cam ((xuc va) or (loc va)) danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y ((tang lap) OR (tan lap)) hai. hieu va cam ((xuc va) OR (loc va)) danh vi cua te.
• Adding a wildcard symbol may retrieve word variants: so sach y ((tang lap) or (tan lap)) hai. hieu va cam ((xuc va) or (loc va)) danh vi cua te*.