Perhaps you should try some spelling variations:
tranh luat » trinh luat, tranh luan, trinh luan
hoc thieu » toc thieu, hoc hien
luat dung » suat dung, luat chung, thuat dung
dung cong » dung trong
ho chieu » theo chieu, doi chieu, mot chieu
ban toan » bai toan, van toan, bao toan
ban than » ban thanh, van thanh, ban hang

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