Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh chua » tranh cua, trinh chuan, tranh chap
cong thanh » cong trinh, cong tan, truong thanh
dong thanh » truong thanh
doi chieu » doc hieu, doi chi, ho chieu
chua dung » chua dong, thuat dung, chua nhung
than cap » khan cap, thanh lap, thanh cac

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

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