Perhaps you should try some spelling variations:
trinh cac » trinh chat, trinh chao, trinh cham
chao lanh » nha lanh, cao lan, cay lanh
choi viet » cuoi viet, chi viet, thoai viet
trinh cau » trinh chat, trinh chao, trinh tu
doanh va » doan va, doanh tai, doanh cua
hoi viet » hai viet, oi viet, thai viet
lanh tao » lanh dao, lanh tho, sang tao
cac tap » cac cap, cac tac, cac tai
tao cao » bao cao, toan cao
cao cap » cao chat
do choi » tro choi
co hoi » co hoc, co loi
cap do » cau do

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong ((trinh cac) OR (trinh cau)) doanh va cac tap co hoi viet nam ) OR ( ((chuong trinh) OR (cong trinh)) chao lanh tao cao cap do choi viet nam ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong ((trinh cac) or (trinh cau)) doanh va cac tap co hoi viet nam ) or ( ((chuong trinh) OR (cong trinh)) chao lanh tao cao cap do choi viet nam ))~".
• Adding a wildcard symbol may retrieve word variants: (( chuong ((trinh cac) or (trinh cau)) doanh va cac tap co hoi viet nam ) or ( ((chuong trinh) OR (cong trinh)) chao lanh tao cao cap do choi viet nam ))*.