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
cua tre » cua te, cuu tre, cua triet
xuc ban » duc ban, cuc ban, quoc ban
lam xuc » cam xuc, lam duoc
van lam » van nam
sach ty » sach y, sach tu, sach thu
hang ca » hang va, nang cao, hang tai
hang xa » hoang xa, hang va, lang xa
su tien » su kien, su hien, tu tieng

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 xa) OR (hang ca)) hoi. hieu van lam xuc ban thanh van ((cua tre) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((hang xa) OR (hang ca)) hoi. hieu van lam xuc ban thanh van ((cua tre) OR (su tien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((hang xa) OR (hang ca)) hoi. hieu van lam xuc ban thanh van ((cua tre) or (su tien))".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((hang xa) OR (hang ca)) hoi. hieu van lam xuc ban thanh van ((cua tre) or (su tien))*.