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
cau luan » cu luan, dau luan, lau luan
san viet » gian viet, anh viet
cam tay » cam bay, cam day, nam tay
luan va » luan van, luat va
cac cay » ca cay, cac cam, cac cap
cao van » cac van, dao van, cao dang
o suoi » o luoi
co tay » so tay, co may, co ta
ca tay » ha tay, ca cay, ca tai
o soi » mo soi, o hoi, o noi

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