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
trinh sau » trinh san, trinh su, trinh mau
cay cong » cac cong, cau cong, cay trong
cao cong » cac cong, cao dang, cua cong
soi viet » so viet, hoi viet, oi viet
cac cau » cac mau, bac cau, cac cam
sau lan » dau luan
cac hat » cac chat, cac hoat, cau hat
cac ham » cac cam, cac nhan, cac chat
co hoi » co hoc
ca cau » can cau, cua cau, ca cac
ky lan » ky dan, ky la
lan va » luan va, lanh va, lan van

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