Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
tu tieng » luc tieng, tu tuong, tu trong
thanh ve » hanh ve, thanh va, thanh vien
su tien » su kien, su hien, dau tien
vuc van » duc van, luc van, thuc van
cao vuc » cao duc, cao suc, cao vu
su sach » vu sach
hieu va » lieu va, hieu qua
vu nang » vuc nang, va nang, vu dang
so sach » so sanh, bo sach, co sach
va cao » va cac, va co, va dao
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: ((su sach) OR (so sach)) vu nang x hoi. hieu va cao vuc van thanh ve ((su tien) or (tu tieng))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) vu nang x hoi. hieu va cao vuc van thanh ve ((su tien) OR (tu tieng)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) vu nang x hoi. hieu va cao vuc van thanh ve ((su tien) or (tu tieng))".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) vu nang x hoi. hieu va cao vuc van thanh ve ((su tien) or (tu tieng))*.