Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cau » trinh chat, trinh chao, trinh tu
dinh cuu » dinh chi
sinh cua » manh cua, sinh va
tinh cua » trinh cua, tinh chat, tranh cua
soi viet » so viet, hoi viet, oi viet
cau dan » cau danh, cac dan, ca dan
tay co » ty co, tay o
cay co » cac co, cay cong
dan va » doan va, dan ca, ban va

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 cau dan va cac ((cay co) OR (tay co)) soi viet nam ) or ( chuong ((tinh cua) or (((sinh cua) or (dinh cuu)))) dan va cac ((cay co) OR (tay co)) soi viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh cau dan va cac ((cay co) OR (tay co)) soi viet nam ) OR ( chuong ((tinh cua) OR (((sinh cua) OR (dinh cuu)))) dan va cac ((cay co) OR (tay co)) soi viet nam )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh cau dan va cac ((cay co) OR (tay co)) soi viet nam ) or ( chuong ((tinh cua) or (((sinh cua) or (dinh cuu)))) dan va cac ((cay co) OR (tay co)) soi viet nam ))".
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh cau dan va cac ((cay co) OR (tay co)) soi viet nam ) or ( chuong ((tinh cua) or (((sinh cua) or (dinh cuu)))) dan va cac ((cay co) OR (tay co)) soi viet nam ))*.