Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
toan cua » than cua, tan cua, doanh cua
te sach » toc sach
hoc van » hoc dan, hoc va, hoc vat
vu cham » va cham, vu kham, tu cham
ve cham » va cham, ve chat, ve chim
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
oc van » luoc van, quoc van
x hoi » xa hoi, o hoi, x ho

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: te sach y nang x hoi. hieu ((ve cham) OR (vu cham)) ((oc van) OR (hoc van)) thanh toan cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang x hoi. hieu ((ve cham) OR (vu cham)) ((oc van) or (hoc van)) thanh toan cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu ((ve cham) OR (vu cham)) ((oc van) or (hoc van)) thanh toan cua tre*.