Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
thanh ve » thanh va, thanh vien, thanh van
hanh ve » hanh vi, hanh va, hanh kem
duc van » duc va, duc tan, duc manh
hau duc » huu duc, ha duc, pham duc
van hau » van ha, van hai, van dau
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach 2, sach vay
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach v) or (sach y)) nang x hoi. hieu van hau duc van ((thanh ve) OR (hanh ve)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach v) OR (sach y)) nang x hoi. hieu van hau duc van ((thanh ve) OR (hanh ve)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((sach v) or (sach y)) nang x hoi. hieu van hau duc van ((thanh ve) OR (hanh ve)) cua tre".
• Adding a wildcard symbol may retrieve word variants: toc ((sach v) or (sach y)) nang x hoi. hieu van hau duc van ((thanh ve) OR (hanh ve)) cua tre*.