Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh chan » trinh chuan, trinh han, trinh phan
chan dang » phan dang, chan dung, nhan dang
trinh cao » trinh chao, trinh cau, tinh cao
hoi viet » hai viet, oi viet, thai viet
dang vat » dang van, dong vat, dang nhat
trinh co » trinh do, trinh cong, trinh hoa
cot soi » cot loi, cong soi
coc soi » cong soi
cua cay » cua cac
vat cua » mat cua, bat cua, dat cua
van vat » van chat, nhan vat
vat ca » vat va, tat ca, vat da
ca cay » cac cay, ca cac, ca cao
cay co » cac co, tay co, cay cong
co hoi » co hoc, co loi
co van » cao van, vo van, so van
co may » co ma
may co » tay co, lay co, may cd

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 co van vat cua cay ((coc soi) OR (cot soi)) viet nam ) or ((( chuong trinh cao dang vat ca cay co hoi viet nam ) or ( chuong trinh chan dang vat co may co hoi viet nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh co van vat cua cay ((coc soi) OR (cot soi)) viet nam ) OR ((( chuong trinh cao dang vat ca cay co hoi viet nam ) OR ( chuong trinh chan dang vat co may co hoi viet nam )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh co van vat cua cay ((coc soi) OR (cot soi)) viet nam ) or ((( chuong trinh cao dang vat ca cay co hoi viet nam ) or ( chuong trinh chan dang vat co may co hoi viet nam ))))".
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh co van vat cua cay ((coc soi) OR (cot soi)) viet nam ) or ((( chuong trinh cao dang vat ca cay co hoi viet nam ) or ( chuong trinh chan dang vat co may co hoi viet nam ))))*.