Perhaps you should try some spelling variations:
trinh khao » trinh chao, trinh khai, trinh kham
khao doanh » khao danh, cho doanh, nhap doanh
trinh chap » trinh chat, tranh chap, trinh chao
khao nhanh » nhan nhanh, khao danh, khac khanh
soi viet » so viet, hoi viet, doi viet
doanh va » doan va, doanh tai, doanh cua
khao anh » khao danh, khac manh, ha anh
oi viet » hoi viet, o viet, cuoi viet
cac cap » cao cap, cac cau, cac cay
cac cam » cac cau, cac cay, cac ham
cac nam » bac nam, cac ham, cai nam
hanh va » hanh vi
nam co » nam cao, nam bo, nam so
co soi » cot soi, co so, co hoi
cam co » cac co, cay co, lam co
co oi » co hoi, co loi, co doi

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 chap ((hanh va) OR (hang va)) cad cam co soi viet nam ) or ((( cong trinh ((khao anh) or (khao nhanh)) va cac nam co soi viet nam ) or ( cong trinh khao doanh va ((cac cam) or (cac cap)) co oi viet nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh chap ((hanh va) OR (hang va)) cad cam co soi viet nam ) OR ((( cong trinh ((khao anh) OR (khao nhanh)) va cac nam co soi viet nam ) OR ( cong trinh khao doanh va ((cac cam) OR (cac cap)) co oi viet nam ))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh chap ((hanh va) OR (hang va)) cad cam co soi viet nam ) or ((( cong trinh ((khao anh) or (khao nhanh)) va cac nam co soi viet nam ) or ( cong trinh khao doanh va ((cac cam) or (cac cap)) co oi viet nam ))))*".