Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
cua triet » cua viet, su triet, va triet
toan cua » than cua, tan cua, doanh cua
te sach » toc sach
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
hoc van » hoc dan, hoc va, hoc vat
y nang » ly nang, v nang, may 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.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((y nang) OR (ky nang)) x hoi. hieu ve cham ((oc van) or (hoc van)) thanh toan cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ky nang)) x hoi. hieu ve cham ((oc van) OR (hoc van)) thanh toan cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) OR (ky nang)) x hoi. hieu ve cham ((oc van) or (hoc van)) thanh toan cua triet*".