Perhaps you should try some spelling variations:
dung nhan » dung luan
trinh cao » trinh chao, tinh cao, trinh cho
trinh cau » trinh chat, trinh chao, trinh tu
nhan cac » nhan cach, phan cac, nhan mac
trinh co » trinh do, trinh cong, trinh hoa
hoi viet » hai viet, oi viet, thai viet
cac cau » cac mau, bac cau, ca cau
ky hanh » ly hanh, ky anh, ky danh
cac cay » ca cay, cac cam, cac cap
ky lanh » ky anh, ky danh, ky xanh
so viet » hoc viet
cau lo » cau do, cau o, cam lo
co hoi » co hoc, co loi
cay co » tay co, cay cong
cac co » cac cong
ca cac » cua cac
lo hoi » le hoi, o hoi, lu hoi
va ca » va cao, va cai, va cau

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 ((ky lanh) OR (ky hanh)) va ca cac co so viet nam ) or ((( cong trinh co ban va cac cay co hoi viet nam ) or ( chuong ((trinh cao) or (trinh cau)) dung nhan cac cau lo hoi viet nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh ((ky lanh) OR (ky hanh)) va ca cac co so viet nam ) OR ((( cong trinh co ban va cac cay co hoi viet nam ) OR ( chuong ((trinh cao) OR (trinh cau)) dung nhan cac cau lo hoi viet nam )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh ((ky lanh) OR (ky hanh)) va ca cac co so viet nam ) or ((( cong trinh co ban va cac cay co hoi viet nam ) or ( chuong ((trinh cao) or (trinh cau)) dung nhan cac cau lo hoi viet nam ))))".
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh ((ky lanh) OR (ky hanh)) va ca cac co so viet nam ) or ((( cong trinh co ban va cac cay co hoi viet nam ) or ( chuong ((trinh cao) or (trinh cau)) dung nhan cac cau lo hoi viet nam ))))*.