Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
kho tang » cao tang
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
dua ban » dia ban, cua ban, mua ban
van cua » vang cua, ban cua, dan cua
qua ban » cua ban, qua quan
van lam » van nam
ky tang » ky nang, ky dang, ky trong
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) or (kho tang)) ma hoa. hieu van lam ((dua ban) or (qua ban)) thanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky tang) OR (kho tang)) ma hoa. hieu van lam ((dua ban) OR (qua ban)) thanh van cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky tang) or (kho tang)) ma hoa. hieu van lam ((dua ban) or (qua ban)) thanh van cua tre*.