Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cau » trinh chat, trinh chao, trinh tu
cuoi viet » nguoi viet, co viet, nuoc viet
hoi viet » hai viet, oi viet, thai viet
cau lanh » cau danh, cay lanh, dau lanh
lanh va » hanh va, anh va, lanh dao
co cuoi » co nuoi, cho cuoc, co nguoi
lan van » luan van, lang van, tan van
cao cay » cao cap, cho cay, tao cay
cao tay » cao tai, dao tay, bao tay
tay co » ty co, tay o
lan va » luan va, lang va, ban va
va cao » va cac, va co, va dao
cay co » cac co, cay cong
co hoi » co hoc, co loi

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