Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
qua hai » qua hoat
hai xuc » hai cuc, hai xu, chat xuc
hoi cua » hoi chuc
cua te » cua tu
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 ty nang x hoi. hieu qua hai xuc ((van ban) or (van thanh)) hoi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang x hoi. hieu qua hai xuc ((van ban) OR (van thanh)) hoi cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang x hoi. hieu qua hai xuc ((van ban) or (van thanh)) hoi cua te*.