Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
ban thanh » ban hanh, ban hang
tu sach » thu sach, su sach, tu cach
van hau » van ha, van hai, van dau
van cuu » van chu, van cu, van cua
qua ban » cua ban, qua quan
van cau » van dau, van chat, toan cau
te sach » toc sach
cuu tre » cua tre, cau tren, cau treo
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: ((tu sach) or (te sach)) ky nang x hoi. hieu ((van cau) OR (van hau)) qua ban thanh van cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky nang x hoi. hieu ((van cau) OR (van hau)) qua ban thanh van cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky nang x hoi. hieu ((van cau) OR (van hau)) qua ban thanh van cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky nang x hoi. hieu ((van cau) OR (van hau)) qua ban thanh van cuu tre*.