Perhaps you should try some spelling variations:
thanh trung » thanh tung
phuong cong » phuong dong, phong cong, phung cong
theo chieu » theo tieu, ho chieu, theo chu
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doc hieu, doi chi, ho chieu
va phuong » va thuong, cac phuong
trung va » truong va, trang va, trung ha
khan cap » khan ap, khoan cam, phan cac
than cap » thanh lap, thanh cac, than cua

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

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