Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh chat » tinh chat, trinh luat, trinh han
trinh cau » trinh chao, trinh tu, trinh han
trinh cao » trinh chao, trinh co, tinh cao
soi viet » so viet, hoi viet, doi viet
oi viet » hoi viet, o viet, cuoi viet
cac tap » cac cap, cac tac, cac tai
cac cam » cad cam, cac cap, cac cau
lanh va » hanh va, anh va, doanh va
cam co » cac co, nam co, cay co
lan va » luan va, lan van, lang va

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 ((lanh va) or (lanh dao)) cac cam co ((soi viet) OR (oi viet)) nam ) or ( chuong ((trinh cau) or (trinh chat)) lan va cac tap co ((soi viet) OR (oi viet)) nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh cao ((lanh va) OR (lanh dao)) cac cam co ((soi viet) OR (oi viet)) nam ) OR ( chuong ((trinh cau) OR (trinh chat)) lan va cac tap co ((soi viet) OR (oi viet)) nam ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh cao ((lanh va) or (lanh dao)) cac cam co ((soi viet) OR (oi viet)) nam ) or ( chuong ((trinh cau) or (trinh chat)) lan va cac tap co ((soi viet) OR (oi viet)) nam ))*".