Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
chieu sach » chinh sach, chiet tach, chieu sang
canh tran » canh tranh, hanh trang, banh trang
hang cong » dang cong, hang nong, bang cong
tran van » luan van
van hang » van khang, van hoang, van thang
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 (chieu sach)) - canh tran van hang cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thien danh) OR (chieu sach)) - canh tran van hang cong dan van ban*.