Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
ban thanh » ban hanh, ban hang
toc sach » hoc sach, doc sach, thuoc sach
nang cac » nang cao, bang cac, hang cac
cac khoi » cac thoi, cac khoan, cach thoi
toan cac » toan cao, toan cau, toan xac
cac tieu » cach tieu, cac trieu, cac kieu
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
cac dua » cach dua, cac qua, cac du
dua ban » dia ban, cua ban, qua ban
ve cac » va cac, vien cac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sinh)) ty nang cac khoi. hieu ve cac dua ban thanh toan cac tieu~.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (hoc sinh)) ty nang cac khoi. hieu ve cac dua ban thanh toan cac tieu*.