Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat, trinh han
trinh cua » tinh cua, trinh luat, trinh luan
cong cong » cong dong, trong cong, dung cong
nho hieu » nha hieu, nho sieu, nhu hieu
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
ho hieu » ho chieu, hoi hieu, co 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) or (nho hieu)) lang - hanh ((trinh cua) OR (trinh quan)) cong cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho hieu) OR (nho hieu)) lang - hanh ((trinh cua) OR (trinh quan)) cong cong dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho hieu) or (nho hieu)) lang - hanh ((trinh cua) OR (trinh quan)) cong cong dan than cau".
• Adding a wildcard symbol may retrieve word variants: ((ho hieu) or (nho hieu)) lang - hanh ((trinh cua) OR (trinh quan)) cong cong dan than cau*.