Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
hieu sang » chieu sang, hieu lang, hieu quang
hanh tung » thanh tung, manh tung, hanh dung
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu sang - ((hanh tung) or (hanh trang)) cua nhung cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sang - ((hanh tung) OR (hanh trang)) cua nhung cong dan than ban*.