Perhaps you should try some spelling variations:
tranh luat » trinh luat, tranh luan, trinh luan
hieu lang » chieu sang, hieu quang, nhieu tang
luat dung » suat dung, luat chung, luat quang
trong dan » trong dang, trong san, trong tan
khoan cam » khoa cam, khoan va, phan cam
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - canh tranh luat dung trong dan ((phan tu) or (khoan cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - canh tranh luat dung trong dan ((phan tu) OR (khoan cam))*.