Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
thanh va » hanh va, thanh ha, thanh ve
te sach » toc sach
sach ky » sac ky, sach y, sach ty
van cao » van bao, van hao, van cau
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet
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: te sach ky nang x hoi. hieu ((van cao) OR (van dao)) duc van ((thanh va) or (thanh van)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x hoi. hieu ((van cao) OR (van dao)) duc van ((thanh va) OR (thanh van)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang x hoi. hieu ((van cao) OR (van dao)) duc van ((thanh va) or (thanh van)) cua tre*".