Perhaps you should try some spelling variations:
trinh luan » trinh quan, trinh han, trinh toan
nhung cong » dung cong, thong cong, hang cong
thao cua » thai cua, than cua, tho cua
cua tinh » cua sinh, va tinh, ha tinh
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh 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: thao cua tinh - hanh ((trinh luan) or (trinh luat)) nhung cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thao cua tinh - hanh ((trinh luan) OR (trinh luat)) nhung cong dan toan cao*.