Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh chat » trinh luat, trinh han, trinh phan
trinh cau » trinh chao, trinh han, trinh tai
hoi viet » hai viet, oi viet, thai viet
trinh tu » trinh ky, trinh do
cau luan » cu luan, dau luan, lau luan
cao tay » cao tai, dao tay, bao tay
luan va » luan van, luat va
co dai » co dan, do dai
co hai » o hai, so hai, cong hai
tay co » ty co, cay co
co hoi » co hoc, co loi
va cao » va cac, va co, va dao
o hoi » o hoc, o hai, o hoa

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 cau luan va cao chat ((co hai) or (co dai)) viet nam ) or ((( chuong trinh tu luan va cao tay co hoi viet nam ) or ( chuong ((trinh chat) or (tinh chat)) luan va cao tay o hoi viet nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh cau luan va cao chat ((co hai) OR (co dai)) viet nam ) OR ((( chuong trinh tu luan va cao tay co hoi viet nam ) OR ( chuong ((trinh chat) OR (tinh chat)) luan va cao tay o hoi viet nam )))).
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh cau luan va cao chat ((co hai) or (co dai)) viet nam ) or ((( chuong trinh tu luan va cao tay co hoi viet nam ) or ( chuong ((trinh chat) or (tinh chat)) luan va cao tay o hoi viet nam ))))*.