Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
dang van » hoang van, hang va
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
tai cua » thai cua, tai cuc, tri cua
qua ban » qua quan
van lam » van nam
sach ky » sac ky, sach y, sach ty
tang ma » mang may, tang van
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky ((tang ma) or (dang van)) hoa. hieu van lam ((cua ban) or (qua ban)) thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((tang ma) OR (dang van)) hoa. hieu van lam ((cua ban) OR (qua ban)) thanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((tang ma) or (dang van)) hoa. hieu van lam ((cua ban) or (qua ban)) thanh tai cua tre*.