Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cao » trinh chao, trinh co, tinh cao
trinh cau » trinh chat, trinh chao, trinh tu
cong san » cong tac
cay cong » cac cong, cao cong, cau cong
soi viet » so viet, hoi viet, oi viet
san viet » gian viet, anh viet
cau lan » cau lanh, sau lan, cau van
cam tay » cam bay, cam day, nam tay
cao lan » cao van, cao dang, cao tang
lan van » luan van, lang van, tan van
va cao » va cac, va co, va dao
co tay » so tay, co may, co ta
ca tay » ha tay, ca cay, ca tai
va ca » va cac, va cai, va cau
o soi » mo soi, o suoi, o hoi

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