Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
lam xuc » cam xuc, lam duoc
van lam » van nam
ty hang » ly hang, thi hang, thu hang
su viet » so viet

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 ((ty hang) or (ty xang)) xa hoi. hieu van lam xuc ban thanh van ((cua tre) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty hang) OR (ty xang)) xa hoi. hieu van lam xuc ban thanh van ((cua tre) OR (su viet)).
• Adding a wildcard symbol may retrieve word variants: su sach ((ty hang) or (ty xang)) xa hoi. hieu van lam xuc ban thanh van ((cua tre) or (su viet))*.