Perhaps you should try some spelling variations:
ban thanh » ban hanh
hoc thuc » hoc huu
cau treo » cau tren, cau triet, cau trieu
ban hang » ngan hang
cau theo » cau thi, cau tao
hieu van » hieu va, thien van, lieu va
van hoc » van hoa
sach vu » sach va, sach tu, sach uu
vu nang » vuc nang, va nang, vu dang
te sach » toc sach
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 vu nang x hoi. hieu van hoc thuc ((ban thanh) OR (ban hang)) ve ((cau treo) or (cau theo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach vu nang x hoi. hieu van hoc thuc ((ban thanh) OR (ban hang)) ve ((cau treo) OR (cau theo)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach vu nang x hoi. hieu van hoc thuc ((ban thanh) OR (ban hang)) ve ((cau treo) or (cau theo))".
• Adding a wildcard symbol may retrieve word variants: te sach vu nang x hoi. hieu van hoc thuc ((ban thanh) OR (ban hang)) ve ((cau treo) or (cau theo))*.