Perhaps you should try some spelling variations:
hoc thuyet » hoc chuyen
thanh luan » tranh luan, thanh xuan, thanh tuan
hang cong » dang cong, hang nong, bang cong
ho chiet » ho chieu, ho thiet, hoc thiet
van hang » van khang, van hoang, van thang
cong san » cong tac
san juan » san luan, san quan, san xuat
juan cao » quang cao, toan cao, quan cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chiet) or (hoc thuyet)) tach - thanh luan van hang cong san juan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chiet) OR (hoc thuyet)) tach - thanh luan van hang cong san juan cao.
• Adding a wildcard symbol may retrieve word variants: ((ho chiet) or (hoc thuyet)) tach - thanh luan van hang cong san juan cao*.