Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cau » trinh chat, trinh chao, trinh tu
dong hoc » dong co, dong luc
cong hoc » cong hoa, cong coc, cong ho
soi viet » so viet, hoi viet, oi viet
cao tang » cao dang
cau lan » cau lanh, cao lan, sau lan
cao tan » cao tai, cao van, cao lan
ca tay » cam tay, ha tay, ca tai
tay co » ty co, cay co, tay o
co soi » cot soi, co so, co hoi
van ca » van cau, van cua, dan ca
lan va » luan va, lanh va, lan van
ca cay » cua cay, cac cay, ca cac
va ca » va cac, va cao, va cai

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