Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thu sach » tu sach, thuat sach, thuoc sach
tu tieng » luc tieng, tu tuong
thanh ve » hanh ve, thanh va, thanh vien
tu trong » tu tuong
sach vu » sach va, sach tu, sach uu
vuc van » duc van, luc van, thuc van
vu nang » vuc nang, va nang, vu dang
va cam » va cham, va cao, va cai
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: thu sach vu nang x hoi. hieu ((va cam) or (va cac)) vuc van thanh ve ((tu tieng) OR (tu trong))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach vu nang x hoi. hieu ((va cam) OR (va cac)) vuc van thanh ve ((tu tieng) OR (tu trong)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach vu nang x hoi. hieu ((va cam) or (va cac)) vuc van thanh ve ((tu tieng) OR (tu trong))".
• Adding a wildcard symbol may retrieve word variants: thu sach vu nang x hoi. hieu ((va cam) or (va cac)) vuc van thanh ve ((tu tieng) OR (tu trong))*.