Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
sach thu » sach thue, sach thieu, sach tham
thu dang » thu hang, thu bang, thu dong
kham duc » kham cuoc, pham duy, phan duc
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
van hoe » van hoc, van hieu, van hien
hieu vu » hieu va, hieu ve, hieu su
van cua » vang cua, ban cua, dan cua
cua tre » cua te, cuu tre, cua triet

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thu dang ((van hoe) OR (van hoa)). hieu vu ((kham duc) OR (pham duc)) va thanh van cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thu dang ((van hoe) OR (van hoa)). hieu vu ((kham duc) or (pham duc)) va thanh van cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sach thu dang ((van hoe) OR (van hoa)). hieu vu ((kham duc) or (pham duc)) va thanh van cua tre*.