Perhaps you should try some spelling variations:
thai viet » thi viet, tai viet, mai viet
chat ban » nhat ban, chat ran, cua ban
hoi viet » hai viet, oi viet, cuoi viet
shan dan » nhan dan, phan dang, nhan dang
cac tay » cac cay, cac tac, cac tai
co thai » do thai, ca thai, co hai
han dan » nhan dan, han danh, ban dan
ban can » ban dan, ban hang, ban hanh
can cac » ca cac, can cau, can tac
co hoi » co hoc, co loi
tay co » ty co, cay co, tay o

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) OR (cong trinh)) ((han dan) or (shan dan)) va cac tay co thai viet nam ) or ( ((chuong trinh) OR (cong trinh)) chat ban can cac tay co hoi viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((chuong trinh) OR (cong trinh)) ((han dan) OR (shan dan)) va cac tay co thai viet nam ) OR ( ((chuong trinh) OR (cong trinh)) chat ban can cac tay co hoi viet nam )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((chuong trinh) OR (cong trinh)) ((han dan) or (shan dan)) va cac tay co thai viet nam ) or ( ((chuong trinh) OR (cong trinh)) chat ban can cac tay co hoi viet nam ))".
• Adding a wildcard symbol may retrieve word variants: (( ((chuong trinh) OR (cong trinh)) ((han dan) or (shan dan)) va cac tay co thai viet nam ) or ( ((chuong trinh) OR (cong trinh)) chat ban can cac tay co hoi viet nam ))*.