Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh han » trinh quan
trinh cau » trinh chat, trinh chao, trinh tu
trinh cao » trinh chao, trinh co, tinh cao
soi viet » so viet, hoi viet, oi viet
cong san » cong tac
cong so » cong hoa
lang va » lang van, hang va, lang ha
ca tay » cam tay, ha tay, ca cay
ca cao » ca dao, cu cao, ca cac
lan va » luan va, lanh va, lan van
tay o » tay co
o soi » mo soi, o suoi, o hoi
n ca » na ca, _ ca, n a

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 ((lan va) OR (lang va))n ca tay o soi viet nam ) or ( chuong ((trinh cau) or (trinh han)) ((lan va) OR (lang va)) ca cao ((cong so) or (cong san)) viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh cao ((lan va) OR (lang va))n ca tay o soi viet nam ) OR ( chuong ((trinh cau) OR (trinh han)) ((lan va) OR (lang va)) ca cao ((cong so) OR (cong san)) viet nam )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh cao ((lan va) OR (lang va))n ca tay o soi viet nam ) or ( chuong ((trinh cau) or (trinh han)) ((lan va) OR (lang va)) ca cao ((cong so) or (cong san)) viet nam ))".
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh cao ((lan va) OR (lang va))n ca tay o soi viet nam ) or ( chuong ((trinh cau) or (trinh han)) ((lan va) OR (lang va)) ca cao ((cong so) or (cong san)) viet nam ))*.