Perhaps you should try some spelling variations:
trinh cham » trinh chat, trinh chao, trinh han
trinh chuc » trinh thuc, trinh chu, trinh phuc
trinh cay » trinh cau, trinh may, trinh cac
chuc danh » chuc nganh, thuc hanh, chuc nang
cay doanh » vay doanh, cac doanh, cao doanh
mai viet » thi viet
cham anh » pham anh, pham hanh, cham binh
dai viet » dao viet, tai viet, da viet
hoi viet » hai viet, oi viet, thai viet
doanh va » doan va, doanh tai, doanh cua
cho hoi » cho hoc, cho moi, cho doi
cac cap » cao cap, cac cam, cac cay
danh va » hanh va, dan va, dang va
cac cau » cac mau, bac cau, ca cau
anh va » hanh va
va cao » va co, va dao, va bao
cau co » cau do, cac co, cay co
co dai » co dan, do dai
cap o » cap do, cap 1, cap 5

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( cong trinh cay doanh va cac cap cho hoi viet nam ) or ((( chuong trinh cham anh va cao ((cap o) or (cap 2)) mai viet nam ) or ( chuong trinh chuc danh va cac cau co dai viet nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( cong trinh cay doanh va cac cap cho hoi viet nam ) OR ((( chuong trinh cham anh va cao ((cap o) OR (cap 2)) mai viet nam ) OR ( chuong trinh chuc danh va cac cau co dai viet nam )))).
• Adding a wildcard symbol may retrieve word variants: (( cong trinh cay doanh va cac cap cho hoi viet nam ) or ((( chuong trinh cham anh va cao ((cap o) or (cap 2)) mai viet nam ) or ( chuong trinh chuc danh va cac cau co dai viet nam ))))*.