Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
manh tran » manh toan, manh tuan, canh tranh
tran tuan » tran xuan, tran quang, tran thanh
tuan dang » tran dang, tuan bang, tuan dung
dang cong » dung cong
cong van » cong vang, cong san, song van
van than » van thanh, van thang, van tuan
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (trieu tinh)) - manh tran tuan dang cong van than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (trieu tinh)) - manh tran tuan dang cong van than cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (trieu tinh)) - manh tran tuan dang cong van than cau*.