Perhaps you should try some spelling variations:
vien thu » vien thuy, vien phu, tien thu
viet thu » viet thuc, viet tu, viet chu
van anh » van thanh, tuan anh, van minh
xuc van » duc van, luc van, vuc van
cao xuc » cam xuc, cao duc, cao suc
te sach » toc sach
hieu va » lieu va, hieu qua
vu dang » su dang, vu quang, cua dang
va nang » van nang, da nang, cam 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 ((va nang) or (vu dang)) xa hoi. hieu va cao xuc van anh ((viet thu) OR (vien thu)) hien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((va nang) OR (vu dang)) xa hoi. hieu va cao xuc van anh ((viet thu) OR (vien thu)) hien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((va nang) or (vu dang)) xa hoi. hieu va cao xuc van anh ((viet thu) OR (vien thu)) hien".
• Adding a wildcard symbol may retrieve word variants: te sach ((va nang) or (vu dang)) xa hoi. hieu va cao xuc van anh ((viet thu) OR (vien thu)) hien*.