Perhaps you should try some spelling variations:
chuong trinh » cong trinh
nhat hanh » nhat ban, nhat minh
chat danh » nhat danh, chat ban, chat ran
trinh cau » trinh chat, trinh chao, trinh han
soi viet » so viet, doi viet, noi viet
hoi viet » hai viet, thai viet, cuoi viet
cay cong » cac cong, cao cong, cau cong
trinh tu » trinh ky, trinh do
cac cau » cac mau, bac cau, ca cau
oi viet » o viet, cuoi viet, gioi viet
danh va » doanh va, hanh va, anh va
ca cay » cua cay, cac cay, ca cac
cau co » cau do, cac co, cay co
co hoi » co hoc, co loi
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 cau) or (trinh tu)) danh va ca cay cong ((soi viet) or (oi viet)) nam ) or ( chuong trinh ((chat danh) OR (nhat hanh)) va cac cau co hoi viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong ((trinh cau) OR (trinh tu)) danh va ca cay cong ((soi viet) OR (oi viet)) nam ) OR ( chuong trinh ((chat danh) OR (nhat hanh)) va cac cau co hoi viet nam )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong ((trinh cau) or (trinh tu)) danh va ca cay cong ((soi viet) or (oi viet)) nam ) or ( chuong trinh ((chat danh) OR (nhat hanh)) va cac cau co hoi viet nam ))".
• Adding a wildcard symbol may retrieve word variants: (( chuong ((trinh cau) or (trinh tu)) danh va ca cay cong ((soi viet) or (oi viet)) nam ) or ( chuong trinh ((chat danh) OR (nhat hanh)) va cac cau co hoi viet nam ))*.