Perhaps you should try some spelling variations:
trinh cham » trinh chat, trinh chao, trinh han
trinh cau » trinh chat, trinh chao, trinh tu
cham anh » pham anh, pham hanh, cham binh
sai viet » san viet, mai viet, tai viet
cau anh » cau danh, cau lanh, cuu anh
cac nam » bac nam, cac cam, cac ham
so viet » hoc viet
cac cau » cac mau, bac cau, ca cau
anh va » hanh va
nam co » nam cao, nam bo, nam so
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 va cac nam co so viet nam ) or ( cong trinh cham anh va cac cau do sai viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh cau anh va cac nam co so viet nam ) OR ( cong trinh cham anh va cac cau do sai viet nam )).
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh cau anh va cac nam co so viet nam ) or ( cong trinh cham anh va cac cau do sai viet nam ))*.