Perhaps you should try some spelling variations:
duong cong » dung cong, luong cong, duong trong
hanh tranh » canh tranh, hanh trinh, hanh trang
dong thanh » truong thanh
doi chieu » doc hieu, ho chieu, mot chieu
tranh cua » doanh cua, manh cua
dong cong » dung cong, dang cong, cong cong
thanh cac » hanh cac, thanh bac, thanh ca
doi chi » doi khi

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 (doi chi)) xanh - hanh tranh cua ((dong cong) OR (duong cong)) dong thanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) xanh - hanh tranh cua ((dong cong) OR (duong cong)) dong thanh cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (doi chi)) xanh - hanh tranh cua ((dong cong) OR (duong cong)) dong thanh cac".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doi chi)) xanh - hanh tranh cua ((dong cong) OR (duong cong)) dong thanh cac*.