Perhaps you should try some spelling variations:
tranh luat » trinh luat, tranh luan, trinh luan
doi chieu » doi chi, ho chieu, mot chieu
luat dung » suat dung, luat chung, luat quang
dung cong » dung trong
doc hieu » toc thieu, hoc thieu, hoc hien
cong tac » cong ty
than cau » toan cau, phan cau, than cap
phan cac » nhan cach, phan dau, phan lap

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 (doc hieu)) sach - canh tranh luat dung cong tac ((than cau) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) sach - canh tranh luat dung cong tac ((than cau) OR (phan cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doc hieu)) sach - canh tranh luat dung cong tac ((than cau) or (phan cac))".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doc hieu)) sach - canh tranh luat dung cong tac ((than cau) or (phan cac))*.