Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
mot chieu » doi chieu, ho chieu
cong tang » cong thang, cong lang, cong vang
toan tan » toan tang, toan tran, toan ban
tan tong » tan trong, toan tong, han tong
cong tan » cong tac, cong san, cong thanh
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (theo tieu)) xanh - thanh toan tan tong ((cong tan) or (cong tang)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (theo tieu)) xanh - thanh toan tan tong ((cong tan) OR (cong tang)) phan dau.
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (theo tieu)) xanh - thanh toan tan tong ((cong tan) or (cong tang)) phan dau*.