Perhaps you should try some spelling variations:
thanh luan » tranh luan, thanh xuan, thanh tuan
hoang cong » hang cong, hoang long, hoang vuong
van hoang » van hoan, quan hoang, tran hoang
tac phan » tai phan, tac phat, cac phan
tac pham » thuc pham, san pham
ho chau » ho chu, o chau, khoa chau
ha chau » hat chau, a chau, lai chau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chau) OR (ha chau)) tinh - thanh luan van hoang cong ((tac phan) or (tac pham)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chau) OR (ha chau)) tinh - thanh luan van hoang cong ((tac phan) OR (tac pham)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chau) OR (ha chau)) tinh - thanh luan van hoang cong ((tac phan) or (tac pham)) tap".
• Adding a wildcard symbol may retrieve word variants: ((ho chau) OR (ha chau)) tinh - thanh luan van hoang cong ((tac phan) or (tac pham)) tap*.