Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
thanh le » thinh le, thanh ve, thanh de
phuc ban » phuc van, thuc ban, thuoc ban
hau phuc » huu phuc, cau phuc, hanh phuc
van hau » van ha, van hai, van dau
hoc anh » hoc nganh, hoc nhanh, ngoc anh
ky lang » ky dang, ky tang, tay lang
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
le cua » ly cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc anh) or (su sach)) ((ky lang) or (ky nang)) xa hoi. hieu van hau phuc ban thanh le cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc anh) OR (su sach)) ((ky lang) OR (ky nang)) xa hoi. hieu van hau phuc ban thanh le cua tre.
• Adding a wildcard symbol may retrieve word variants: ((hoc anh) or (su sach)) ((ky lang) or (ky nang)) xa hoi. hieu van hau phuc ban thanh le cua tre*.