Perhaps you should try some spelling variations:
tranh luat » trinh luat, tranh luan, trinh luan
luat cong » thuat cong, luat chung, cua cong
cong cong » cong dong, trong cong, dung cong
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan cau » toan cao, toan ban, toan tap
doi thi » doi thoi, doi khi, doi thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi thi) OR (do thi)) hanh - canh tranh luat cong cong tap toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi thi) OR (do thi)) hanh - canh tranh luat cong cong tap toan cau".
• Adding a wildcard symbol may retrieve word variants: ((doi thi) OR (do thi)) hanh - canh tranh luat cong cong tap toan cau*.