Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
sach thu » sach thue, sach thieu, sach tham
lang van » tang van, hoang van, giang van
dang van » hoang van, hang va
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
so sach » so sanh, bo sach, co sach
van cam » van nam, van lam, van cau
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach thu ((lang van) or (dang van)) hoi. hieu van cam xuc ((ban thanh) or (van hanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thu ((lang van) OR (dang van)) hoi. hieu van cam xuc ((ban thanh) OR (van hanh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: so sach thu ((lang van) or (dang van)) hoi. hieu van cam xuc ((ban thanh) or (van hanh)) vi cua tre*.