Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh chat » tinh chat, trinh luat, trinh phan
trinh quan » tinh quang, trinh luat
trinh cao » trinh chao, trinh co, trinh cau
so viet » hoc viet
cac cam » cad cam, cac cau, cac cay
cao lan » cao van, cao dang, cao tang
cac cap » cao cap, cac cau, cac cay
o viet » hoc viet
cam co » cac co, nam co, cay co
lan va » luan va, lanh va, lan van
cap co » cap cho, tap co, cap do

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 cao lan va cac cam co ((so viet) or (o viet)) nam ) or ( chuong ((((trinh han) or (trinh quan))) or (trinh chat)) lan va cac cap co ((so viet) or (o viet)) nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh cao lan va cac cam co ((so viet) OR (o viet)) nam ) OR ( chuong ((((trinh han) OR (trinh quan))) OR (trinh chat)) lan va cac cap co ((so viet) OR (o viet)) nam )).
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh cao lan va cac cam co ((so viet) or (o viet)) nam ) or ( chuong ((((trinh han) or (trinh quan))) or (trinh chat)) lan va cac cap co ((so viet) or (o viet)) nam ))*.