Perhaps you should try some spelling variations:
mot chieu » doi chieu, ho chieu
thanh tra » thanh toan, thanh hoa
tan tong » tan trong, toan tong, han tong
cong van » cong vang, song van, cong tan
cong san » cong tac
phan dau » phan tu, hang dau
tra tan » tran tan, tru tan, tra thanh

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 tra tan tong ((cong van) OR (cong san)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (theo tieu)) xanh - thanh tra tan tong ((cong van) OR (cong san)) phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (theo tieu)) xanh - thanh tra tan tong ((cong van) OR (cong san)) phan dau".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (theo tieu)) xanh - thanh tra tan tong ((cong van) OR (cong san)) phan dau*.