Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cao » trinh chao, trinh co, trinh cau
trinh sau » trinh san, trinh cau, trinh su
cao xuat » cao xuan, cac xuat, san xuat
cay cong » cac cong, cao cong, cau cong
soi viet » so viet, doi viet, noi viet
hoi viet » hai viet, thai viet, cuoi viet
cac cac » cac cach, ca cac, cac bac
lan van » luan van, lang van, tan van
oi viet » o viet, cuoi viet, gioi viet
cac nam » bac nam, cac cam, cac ham
cac cay » ca cay, cac cam, cac cap
nam co » nam cao, nam bo, nam so
ky lan » ky dan
lan va » luan va, lanh va, lang va
cac co » cac cong
co oi » co hoi, co loi, co doi
ky la » ky le, ky 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 xuat va cac cay cong ((soi viet) or (hoi viet)) nam ) or ((( chuong trinh ((ky lan) or (ky la)) va cac nam co oi viet nam ) or ( chuong trinh sau ((lan va) OR (lan van)) cac cac co _ viet nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh cao xuat va cac cay cong ((soi viet) OR (hoi viet)) nam ) OR ((( chuong trinh ((ky lan) OR (ky la)) va cac nam co oi viet nam ) OR ( chuong trinh sau ((lan va) OR (lan van)) cac cac co _ viet nam )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh cao xuat va cac cay cong ((soi viet) or (hoi viet)) nam ) or ((( chuong trinh ((ky lan) or (ky la)) va cac nam co oi viet nam ) or ( chuong trinh sau ((lan va) OR (lan van)) cac cac co _ viet nam ))))".
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh cao xuat va cac cay cong ((soi viet) or (hoi viet)) nam ) or ((( chuong trinh ((ky lan) or (ky la)) va cac nam co oi viet nam ) or ( chuong trinh sau ((lan va) OR (lan van)) cac cac co _ viet nam ))))*.