Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh chao » trinh chat, trinh han, trinh co
trinh cau » trinh chat, trinh tu, trinh han
trinh cao » trinh co, tinh cao, trinh cho
cao hanh » dao hanh, cao anh, bao hanh
soi viet » so viet, hoi viet, oi viet
lan van » luan van, lang van, tan van
hanh va » hang va, hanh vi
cac cam » cad cam, cac cap, cac cau
cac tay » cac cay, cac tac, cac tai
tay co » ty co, cay co, tay o
lan va » luan va, lanh va, lang va
co soi » cot soi, co so, co hoi
cam co » cac co, nam co, cay co

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 hanh va cac cam co soi viet nam ) or ( chuong ((trinh cau) or (trinh chao)) ((lan va) OR (lan van)) cac tay co soi viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh cao hanh va cac cam co soi viet nam ) OR ( chuong ((trinh cau) OR (trinh chao)) ((lan va) OR (lan van)) cac tay co soi viet nam )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh cao hanh va cac cam co soi viet nam ) or ( chuong ((trinh cau) or (trinh chao)) ((lan va) OR (lan van)) cac tay co soi viet nam ))".
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh cao hanh va cac cam co soi viet nam ) or ( chuong ((trinh cau) or (trinh chao)) ((lan va) OR (lan van)) cac tay co soi viet nam ))*.