Perhaps you should try some spelling variations:
trinh may » trinh ky, trinh han, trinh ly
trinh cau » trinh chat, trinh chao, trinh tu
pham hanh » pham thanh, pham anh, pham hang
cau danh » cao danh, chuc danh, nam danh
cham anh » pham anh, cham binh, cham tinh
dai viet » mai viet, dao viet, tai viet
doanh va » doanh tai, doanh cua, hanh va
dao cap » cao cap, day cap, dao cac
cac cau » cac mau, bac cau, ca cau
danh va » hanh va, anh va, dan va
oi viet » hoi viet, o viet, cuoi viet
cac cap » cao cap, cac cam, cac cay
va dao » ca dao
cap do » cau do
cau co » cau do, cac co, cay co
co dai » co dan, do dai
o hai » co hai, so hai, _ hai
o lai » o lao
do oi » do moi, do voi, do o

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: (( cong trinh may ((doanh va) OR (doan va)) cac cap do oi viet nam ) OR ((( chuong trinh ((cham anh) OR (pham hanh)) va dao cap ((o hai) OR (o lai)) viet nam ) OR ( chuong trinh cau danh va cac cau co dai viet nam ))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( cong trinh may ((doanh va) OR (doan va)) cac cap do oi viet nam ) or ((( chuong trinh ((cham anh) or (pham hanh)) va dao cap ((o hai) or (o lai)) viet nam ) or ( chuong trinh cau danh va cac cau co dai viet nam ))))~".
• Adding a wildcard symbol may retrieve word variants: (( cong trinh may ((doanh va) OR (doan va)) cac cap do oi viet nam ) or ((( chuong trinh ((cham anh) or (pham hanh)) va dao cap ((o hai) or (o lai)) viet nam ) or ( chuong trinh cau danh va cac cau co dai viet nam ))))*.