Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu lang » chieu sang, hieu quang, nhieu tang
tang luan » dung luan
bang cong » dang cong, bang song, hang cong
anh tang » anh bang, anh dang, anh nang
van tuan » van quan, van ban, anh tuan
tuan cau » toan cau, quan cau, tuan cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (chieu sach)) - anh tang luan ((thanh cong) or (bang cong)) van tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (chieu sach)) - anh tang luan ((thanh cong) OR (bang cong)) van tuan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (chieu sach)) - anh tang luan ((thanh cong) or (bang cong)) van tuan cau*.