Perhaps you should try some spelling variations:
trinh cham » trinh chat, trinh chao, trinh han
cham hanh » pham hanh, chap hanh, pham thanh
cuu anh » cuu thanh, cuu tinh, cuu nang
so viet » hoc viet
cac cau » cac mau, bac cau, ca cau
hanh va » hang va, hanh vi
cau anh » cau danh, cau lanh, cao anh
nam co » nam cao, nam bo, nam so
va bao » va bai
va bac » van bac, va bai, va ban
do soi » do moi, do son, do voi
do sai » do dai, do hai, do mai

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 anh) or (cuu anh)) ((va bac) OR (va bao)) nam co so viet nam ) or ( cong trinh cham hanh va cac cau ((do soi) or (do sai)) viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh ((cau anh) OR (cuu anh)) ((va bac) OR (va bao)) nam co so viet nam ) OR ( cong trinh cham hanh va cac cau ((do soi) OR (do sai)) viet nam )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh ((cau anh) or (cuu anh)) ((va bac) OR (va bao)) nam co so viet nam ) or ( cong trinh cham hanh va cac cau ((do soi) or (do sai)) viet nam ))".
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh ((cau anh) or (cuu anh)) ((va bac) OR (va bao)) nam co so viet nam ) or ( cong trinh cham hanh va cac cau ((do soi) or (do sai)) viet nam ))*.