Perhaps you should try some spelling variations:
tranh luat » trinh luat, tranh luan, trinh luan
luat chung » luan chung, luat thuong, cua chung
chung cong » nhung cong, chong cong, phung cong
hoc thieu » toc thieu, hoc hien
ho chieu » theo chieu, doi chieu, mot chieu
tan toan » tap toan, van toan, dan toan

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