Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
hoc sach » hoc sinh, hoc cac, hoc anh
sach ty » sach y, sach tu, sach thu
ty hang » ly hang, ty xang, thi hang
hang xa » hoang xa, hang va, hang ca
hieu ve » hieu va, hieu van
cac tuc » cac toc, cac tu, cac tac
han tai » hang tai, nhan tai, van tai
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ty hang xa hoi. hieu ve cac tuc va ((han tai) or (thanh toan)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ty hang xa hoi. hieu ve cac tuc va ((han tai) OR (thanh toan)) cua tre.
• Adding a wildcard symbol may retrieve word variants: hoc sach ty hang xa hoi. hieu ve cac tuc va ((han tai) or (thanh toan)) cua tre*.