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
dan thanh » dang thanh, danh thanh, ban thanh
thanh cac » hanh cac, thanh bac, thanh ca
hoc hieu » hoc thieu, hoc hien, doc hieu
cong dan » cong san, cong tan, huong dan

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

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