Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
te sach » toc sach
cao xuc » cam xuc, cao duc, cao suc
viet su » viet suu, viet sau, viet tu
van anh » tuan anh, van minh
su hien » su kien, su tien, thu hien
hieu va » lieu va, hieu qua
va nang » van nang, da nang, cam nang
vu nang » vuc nang, vu dang, v nang
va cao » va cac, va co, va dao

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 ((vu nang) or (va nang)) xa hoi. hieu va cao xuc ((van anh) OR (van thanh)) viet su hien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((vu nang) OR (va nang)) xa hoi. hieu va cao xuc ((van anh) OR (van thanh)) viet su hien*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((vu nang) or (va nang)) xa hoi. hieu va cao xuc ((van anh) OR (van thanh)) viet su hien*".