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
cay cong » cac cong, cao cong, cau cong
cau lang » cac lang, cau lanh, cau long
hoc viet » hoc hien
lang van » dang van, tang van, hoang van
cao lang » cao dang, cao tang, cao bang
lang va » hang va, lang ha, lang xa
cao cay » cao cap, cho cay, tao cay
cam tay » cam bay, cam day, nam tay
ca tay » ha tay, ca cay, ca tai
va cao » va cac, va co, va dao
o soi » mo soi, o suoi, o noi
o hoi » co hoi, o hoc, o hai

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