Perhaps you should try some spelling variations:
tranh luat » trinh luat, tranh luan, tranh cua
trinh luan » trinh luat, trinh quan, trinh han
dung cong » dung trong
ho chinh » hoc chinh, cho chinh, hoa chinh
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chinh sach - canh ((tranh luat) or (trinh luan)) dung cong tap toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chinh sach - canh ((tranh luat) OR (trinh luan)) dung cong tap toan cao.
• Adding a wildcard symbol may retrieve word variants: ho chinh sach - canh ((tranh luat) or (trinh luan)) dung cong tap toan cao*.