Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
cong ngang » cong nhan, cong quang, cong lang
ngang than » nganh thanh, sang than, nang thanh
doi chieu » doc hieu, doi chi, mot chieu
dong cong » duong cong, dung cong, dang cong
ho chieu » theo chieu, hoc thieu, mot chieu
cua dong » chua dong, cua cong, cua dang
than cau » toan cau, phan cau, than cap

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