Perhaps you should try some spelling variations:
trinh cham » trinh chao, trinh han, trinh phan
trinh chuc » trinh thuc, trinh chu, trinh phuc
trinh chat » tinh chat, trinh luat, trinh han
trinh cay » trinh cau, trinh may, trinh cac
cay doanh » vay doanh, cac doanh, cao doanh
chuc danh » chuc nganh, thuc hanh, chuc nang
doanh va » doan va, doanh tai, doanh cua
dai viet » dao viet, tai viet, dan viet
hoi viet » hai viet, oi viet, thai viet
mai viet » thi viet
cac cau » cac mau, bac cau, ca cau
danh va » hanh va, dan va, dang va
da viet » dao viet, dan viet, va viet
cac cap » cao cap, cac cam, cac cay
anh va » hanh va
co hoi » co hoc, co loi
cap co » cap cho, tap co, cap do
cau co » cau do, cac co, cay co
va cao » va co, va dao, va bao
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 co hoi viet nam ) or ((( chuong ((trinh cham) OR (trinh chat)) anh va cao ((cap o) or (cap 2)) mai viet nam ) or ( chuong trinh chuc danh va cac cau co ((dai viet) or (da viet)) nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( cong trinh cay doanh va cac cap co hoi viet nam ) OR ((( chuong ((trinh cham) OR (trinh chat)) anh va cao ((cap o) OR (cap 2)) mai viet nam ) OR ( chuong trinh chuc danh va cac cau co ((dai viet) OR (da viet)) nam )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( cong trinh cay doanh va cac cap co hoi viet nam ) or ((( chuong ((trinh cham) OR (trinh chat)) anh va cao ((cap o) or (cap 2)) mai viet nam ) or ( chuong trinh chuc danh va cac cau co ((dai viet) or (da viet)) nam ))))".
• Adding a wildcard symbol may retrieve word variants: (( cong trinh cay doanh va cac cap co hoi viet nam ) or ((( chuong ((trinh cham) OR (trinh chat)) anh va cao ((cap o) or (cap 2)) mai viet nam ) or ( chuong trinh chuc danh va cac cau co ((dai viet) or (da viet)) nam ))))*.