Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, theo chu, thi chieu
trung cac » truong cac, trung cap, trong cac
ho chieu » hoc thieu, doi chieu, mot chieu
cong ban » cong bang, cong tan, cong dan
cong san » cong tac
cac ung » cac chung, cac cong, cac dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (theo chieu)) xanh - thanh trung cac ung ((cong ban) or (cong san)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) xanh - thanh trung cac ung ((cong ban) OR (cong san)) phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) xanh - thanh trung cac ung ((cong ban) or (cong san)) phan tu".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) xanh - thanh trung cac ung ((cong ban) or (cong san)) phan tu*.