Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cao » trinh chao, trinh co, trinh cau
hai viet » thai viet, mai viet, dai viet
cong hai » cong thai, cong ha, hoang hai
cay cong » cac cong, cao cong, cau cong
tai viet » thi viet, mai viet, tai lieu
lanh va » hanh va, anh va, lanh dao
cua cay » cua cac
cao lan » cao van, cao dang, cao tang
lan va » luan va, lan van, lang va
lan co » lang co, lan cho, lanh co
co cua » con cua, ca cua, cong cua
cay co » cac co, tay co
co tai » cao tai, co thai, bo tai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh cao ((lan va) OR (lanh va)) cua cay cong hai viet nam ) OR ( chuong trinh cao lan co cua cay co tai viet nam ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh cao ((lan va) OR (lanh va)) cua cay cong hai viet nam ) or ( chuong trinh cao lan co cua cay co tai viet nam ))~".
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh cao ((lan va) OR (lanh va)) cua cay cong hai viet nam ) or ( chuong trinh cao lan co cua cay co tai viet nam ))*.