Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cau » trinh chat, trinh chao, trinh tu
trinh sau » trinh san, trinh su, trinh mau
trinh cao » trinh chao, trinh co, tinh cao
sau luan » su luan, dau luan, sau lan
hoi viet » hai viet, oi viet, thai viet
cau luan » cu luan, dau luan, lau luan
van cau » van dau, van hau, toan cau
van cac » van hac, van bac, dan cac
cac cau » cac mau, bac cau, ca cau
cao tan » cao tang, cao tai, cao van
cay co » cac co, tay co, cay cong
co hoi » co hoc, co loi
co doi » cho doi, co dot, co loi
co dai » co dan, do dai

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( chuong trinh cao tan ((van cau) or (((van chat) OR (cao chat)))) cay co hoi viet nam ) or ((( chuong trinh sau luan van cac cau ((co doi) or (co dai)) viet nam ) or ( chuong trinh cau luan van cac cau ((co doi) or (co dai)) viet nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh cao tan ((van cau) OR (((van chat) OR (cao chat)))) cay co hoi viet nam ) OR ((( chuong trinh sau luan van cac cau ((co doi) OR (co dai)) viet nam ) OR ( chuong trinh cau luan van cac cau ((co doi) OR (co dai)) viet nam )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh cao tan ((van cau) or (((van chat) OR (cao chat)))) cay co hoi viet nam ) or ((( chuong trinh sau luan van cac cau ((co doi) or (co dai)) viet nam ) or ( chuong trinh cau luan van cac cau ((co doi) or (co dai)) viet nam ))))".
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh cao tan ((van cau) or (((van chat) OR (cao chat)))) cay co hoi viet nam ) or ((( chuong trinh sau luan van cac cau ((co doi) or (co dai)) viet nam ) or ( chuong trinh cau luan van cac cau ((co doi) or (co dai)) viet nam ))))*.