Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
thong tap » thong cap, tong tap, thong tai
tap doan » tap quan
doan van » doan va, hoang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (theo chieu)) sang - canh tranh cua thong thong tap doan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (theo chieu)) sang - canh tranh cua thong thong tap doan van.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (theo chieu)) sang - canh tranh cua thong thong tap doan van*.