Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thang long » thanh cong
thi chieu » thi chien, thi hieu, theo chieu
tranh cua » doanh cua, manh cua
ho chieu » theo chieu, hoc thieu, doi chieu
san toan » van toan, dan toan, manh toan
toan cau » toan cao, toan ban, toan tap

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 (thi chieu)) tinh - canh tranh cua ((nhung cong) or (thang long)) san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (thi chieu)) tinh - canh tranh cua ((nhung cong) OR (thang long)) san toan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (thi chieu)) tinh - canh tranh cua ((nhung cong) or (thang long)) san toan cau*.