Perhaps you should try some spelling variations:
dung nhan » dung luan
trinh cau » trinh chat, trinh chao, trinh tu
trinh cao » trinh chao, tinh cao, trinh cho
nhan cac » nhan cach, phan cac, nhan mac
trinh co » trinh do, trinh cong, trinh hoa
soi viet » hoi viet, oi viet, doi viet
cac cau » cac mau, bac cau, ca cau
so viet » hoc viet
cac cam » cad cam, cac cap, cac ham
lanh va » hanh va, anh va, lanh dao
ky lanh » ky anh, ky danh, ky hanh
cac cay » ca cay, cac cap, tac cay
cau lo » cau do, cau o, cam lo
co soi » cot soi, co hoi, co loi
cac co » cac cong
ca cac » cua cac, va cac
lo soi » lo so, mo soi
va ca » va cac, va cao, va cai

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 ky lanh va ca cac co so viet nam ) or ((( cong trinh co ban va ((cac cay) OR (cac cam)) co soi viet nam ) or ( chuong ((trinh cao) or (trinh cau)) dung nhan cac cau lo soi viet nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh ky lanh va ca cac co so viet nam ) OR ((( cong trinh co ban va ((cac cay) OR (cac cam)) co soi viet nam ) OR ( chuong ((trinh cao) OR (trinh cau)) dung nhan cac cau lo soi viet nam )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh ky lanh va ca cac co so viet nam ) or ((( cong trinh co ban va ((cac cay) OR (cac cam)) co soi viet nam ) or ( chuong ((trinh cao) or (trinh cau)) dung nhan cac cau lo soi viet nam ))))".
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh ky lanh va ca cac co so viet nam ) or ((( cong trinh co ban va ((cac cay) OR (cac cam)) co soi viet nam ) or ( chuong ((trinh cao) or (trinh cau)) dung nhan cac cau lo soi viet nam ))))*.