Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh chao » trinh chat, trinh han, trinh co
chao dang » cao dang, chan dang, chao yang
trinh cao » trinh co, trinh cau, tinh cao
hai viet » thai viet, dai viet, han viet
tai viet » thi viet, tai lieu, dao viet
mai viet » thi viet
cao luan » cao lan, cao quan, cao xuan
cua cay » cua cac
luan va » luan van, luat va
dang co » dong co, dung co, dang do
co hai » co dai, co hoi, o hai
cay co » cac co, tay co, cay cong
co tai » cao tai, co thai, bo tai
va cua » va chua, via cua, ca cua
co cua » con cua, ca cua, cong cua
co mai » co ma, co may, 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 luan va cua cay co hai viet nam ) or ( chuong trinh cao luan va cua cay co tai viet nam ))) or ((( chuong trinh chao dang co cua cay co hai viet nam ) OR ( chuong trinh chao dang co cua cay co mai viet nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( chuong trinh cao luan va cua cay co hai viet nam ) OR ( chuong trinh cao luan va cua cay co tai viet nam ))) OR ((( chuong trinh chao dang co cua cay co hai viet nam ) OR ( chuong trinh chao dang co cua cay co mai viet nam )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( chuong trinh cao luan va cua cay co hai viet nam ) or ( chuong trinh cao luan va cua cay co tai viet nam ))) or ((( chuong trinh chao dang co cua cay co hai viet nam ) OR ( chuong trinh chao dang co cua cay co mai viet nam ))))".
• Adding a wildcard symbol may retrieve word variants: (((( chuong trinh cao luan va cua cay co hai viet nam ) or ( chuong trinh cao luan va cua cay co tai viet nam ))) or ((( chuong trinh chao dang co cua cay co hai viet nam ) OR ( chuong trinh chao dang co cua cay co mai viet nam ))))*.