Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat, trinh han
nhung cong » dung cong, thong cong, hang cong
trinh cua » tinh cua, trinh luat, trinh luan
chu nang » chuc nang, chua nang, cuu nang
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((ho manh) or (chu nang)) - hanh ((trinh cua) OR (trinh quan)) nhung cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((ho manh) OR (chu nang)) - hanh ((trinh cua) OR (trinh quan)) nhung cong dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((ho manh) or (chu nang)) - hanh ((trinh cua) OR (trinh quan)) nhung cong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: theo ((ho manh) or (chu nang)) - hanh ((trinh cua) OR (trinh quan)) nhung cong dan toan ban*.