Perhaps you should try some spelling variations:
manh trung » manh tung, thanh trung, manh hung
hanh trung » thanh trung, hanh trang, danh trung
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
cua nhung » va nhung
hoc hieu » hoc thieu, hoc hien, doc hieu
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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 lang - ((hanh trung) or (manh trung)) cua nhung cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - ((hanh trung) OR (manh trung)) cua nhung cong dan van ban*.