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
cong hoi » cong nhoi, cong hoa, cong hai
doi viet » dai viet, oi viet, do viet
sau luan » su luan, dau luan, sau lan
hoi viet » hai viet, oi viet, thai viet
cay cong » cac cong, cao cong, cau cong
van chat » cao chat
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
cau co » cau do, cac co, cay co
co doi » cho doi, co dot, co 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)) cay cong hoi viet nam ) or ((( chuong trinh sau luan van cac cau co doi viet nam ) or ( chuong trinh cau luan van cac cau co doi viet nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh cao tan ((van cau) OR (van chat)) cay cong hoi viet nam ) OR ((( chuong trinh sau luan van cac cau co doi viet nam ) OR ( chuong trinh cau luan van cac cau co doi viet nam )))).
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh cao tan ((van cau) or (van chat)) cay cong hoi viet nam ) or ((( chuong trinh sau luan van cac cau co doi viet nam ) or ( chuong trinh cau luan van cac cau co doi viet nam ))))*.