Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
sach thu » sach thue, sach thieu, sach tham
thu tang » thu trang, thu thang, thu hang
van hieu » cao hieu
qua cham » qua hai, qua cac, va cham
so sach » so sanh, bo sach, co sach
xuc van » duc van, luc van, xuc ban
vuc van » duc van, luc van, thuc van
vai cua » dai cua, hai cua, lai 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: so sach thu tang ((van hieu) or (van hoa)). hieu qua cham ((xuc van) OR (vuc van)) thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thu tang ((van hieu) OR (van hoa)). hieu qua cham ((xuc van) OR (vuc van)) thanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach thu tang ((van hieu) or (van hoa)). hieu qua cham ((xuc van) OR (vuc van)) thanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: so sach thu tang ((van hieu) or (van hoa)). hieu qua cham ((xuc van) OR (vuc van)) thanh vai cua te*.