Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
canh tran » canh tranh, hanh trang, banh trang
dang cong » dung cong
tran van » luan van
van dang » van dong, van dung, van nang
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: toc ((thien danh) or (hieu manh)) - canh tran van dang cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thien danh) OR (hieu manh)) - canh tran van dang cong dan van ban*.