Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
hanh trang » thanh trung, canh tranh, hanh trinh
trang luan » tang luan, tranh luan, trang tuan
luan phung » luan phuong, luan chung, luan phong
phung cong » nhung cong, phong cong, nhung chong
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban, toan tap
ban can » ban dan, ban hang, ban hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) OR (chieu sang)) - hanh trang luan phung cong tan ((toan cao) or (ban can))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu sang)) - hanh trang luan phung cong tan ((toan cao) OR (ban can))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chieu sang)) - hanh trang luan phung cong tan ((toan cao) or (ban can))*".