Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
ban thanh » ban hanh, ban hang
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
so sach » bo sach, co sach, hoc sach
so sanh » do sanh
xang xa » lang xa, mang xa, ang xa
van cam » van nam, van lam, van cau
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, dua tren

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