Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
trung hoc » trung quoc
dung cong » dung trong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
tran van » luan van
toan tap » toan ban

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 (chiet tach)) - hanh ((trung hoc) or (tran van)) dung cong manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chiet tach)) - hanh ((trung hoc) OR (tran van)) dung cong manh toan tap.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chiet tach)) - hanh ((trung hoc) or (tran van)) dung cong manh toan tap*.