Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
van duong » van dong, van phong, hai duong
cong nang » cong ngang, cong lang, cong nong
nang quan » ban quan, nang suat
ho chieu » theo chieu, hoc thieu, mot chieu
van dung » van dong, xay dung, tin dung
quan can » quan cau, quan van, xuan can

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