Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
thu tang » thu trang, thu thang, thu hang
qua cham » qua hai, qua cac, va cham
so sach » so sanh, bo sach, co sach
van hoe » van hoc, van hieu, van hien
xuc van » duc van, luc van, xuc ban
vuc van » duc van, luc van, thuc van
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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 thu tang ((van hoe) or (van hoa)). hieu qua cham ((xuc van) or (vuc van)) hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thu tang ((van hoe) OR (van hoa)). hieu qua cham ((xuc van) OR (vuc van)) hanh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: so sach thu tang ((van hoe) or (van hoa)). hieu qua cham ((xuc van) or (vuc van)) hanh vi cua tu*.