Perhaps you should try some spelling variations:
thanh than » thanh thanh, thanh thang, thanh toan
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, hieu ve
than cua » nhan cua, thai cua, ban cua
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

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 y nang xa hoi. ((hieu van) or (lieu va)) bac xuc ban thanh than cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. ((hieu van) OR (lieu va)) bac xuc ban thanh than cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. ((hieu van) or (lieu va)) bac xuc ban thanh than cua tre*.