Perhaps you should try some spelling variations:
theo chiet » theo chieu, thep thiet
chiet tach » chieu sach
mong luan » tong luan, cong luan, dong luan
bang luan » tang luan, hang luan, dung luan
dang cong » dung cong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
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 chiet tach - hanh ((mong luan) or (bang luan)) dang cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chiet tach - hanh ((mong luan) OR (bang luan)) dang cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: theo chiet tach - hanh ((mong luan) or (bang luan)) dang cong dan than cau*.