Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh chao » trinh chat, trinh han, trinh giao
trinh cau » trinh chat, trinh tu, trinh han
trinh co » trinh do, trinh cong, trinh hoa
soi viet » so viet, hoi viet, oi viet
lanh va » hanh va, anh va, doanh va
cac tay » cac cay, cac tac, cac tai
van cac » van hac, van cau, van bac
lan van » luan van, lang van, tan van
co soi » cot soi, co so, co hoi
cac co » cac cong
tay co » ty co, cay co, tay o

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 co ((lanh va) or (lanh dao)) cac ((bac bo) or (cac co)) soi viet nam ) or ( chuong ((trinh cau) or (trinh chao)) lan van cac tay co soi viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh co ((lanh va) OR (lanh dao)) cac ((bac bo) OR (cac co)) soi viet nam ) OR ( chuong ((trinh cau) OR (trinh chao)) lan van cac tay co soi viet nam )).
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh co ((lanh va) or (lanh dao)) cac ((bac bo) or (cac co)) soi viet nam ) or ( chuong ((trinh cau) or (trinh chao)) lan van cac tay co soi viet nam ))*.