Perhaps you should try some spelling variations:
cong ngang » cong nhan, cong quang, cong lang
doi chieu » doc hieu, doi chi, mot chieu
tranh van » tran van, trinh van, thanh van
van nhung » van nhuong, va nhung, van hung
ho chieu » theo chieu, hoc thieu, mot chieu
cong van » cong vang, cong san, song van
tuan cu » tuan tu, quan cua, tuan thu

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)) sang - canh tranh van nhung ((cong van) or (cong ngang)) tuan cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) sang - canh tranh van nhung ((cong van) OR (cong ngang)) tuan cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) sang - canh tranh van nhung ((cong van) or (cong ngang)) tuan cu".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) sang - canh tranh van nhung ((cong van) or (cong ngang)) tuan cu*.