Perhaps you should try some spelling variations:
nhanh chong » thanh cong, khanh phong
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap
ma ban » mua ban, va ban, da ban
ma van » mai van, va van, ha van

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: hoc ((chieu xanh) OR (chieu sach)) - nhanh chong ((ma ban) OR (ma van)) cong tan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (chieu sach)) - nhanh chong ((ma ban) OR (ma van)) cong tan toan cao~".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sach)) - nhanh chong ((ma ban) OR (ma van)) cong tan toan cao*.