Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh sau » trinh san, trinh cau, trinh su
trinh cao » trinh chao, trinh co, trinh cau
trinh cac » trinh cau, trinh chat, trinh chao
soi viet » so viet, hoi viet, oi viet
dong hoc » dong co, dong luc
cay dong » cay cong, cao dong, cau dong
hoc viet » hoc hien
cac van » cac dan
cot soi » cot loi, cong soi
cao tan » cao tang, cao tai, cao van
tan van » tran van, tang van, luan van
cao cay » cao cap, cho cay, tao cay
lanh va » hanh va, anh va, lanh dao
van van » van ban, san van, van vat
cam tay » cam bay, cam day, nam tay
co soi » co so, co hoi, co loi
lan va » luan va, lan van, lang va
ca tay » ha tay, ca cay, ca tai

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 cao tan van ((ca tay) or (cam tay)) co soi viet nam ) or ( chuong trinh cac van van ((ca tay) or (cam tay)) cot soi viet nam ))) or ( chuong trinh sau ((lan va) OR (lanh va)) cao cay dong hoc viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( chuong trinh cao tan van ((ca tay) OR (cam tay)) co soi viet nam ) OR ( chuong trinh cac van van ((ca tay) OR (cam tay)) cot soi viet nam ))) OR ( chuong trinh sau ((lan va) OR (lanh va)) cao cay dong hoc viet nam )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( chuong trinh cao tan van ((ca tay) or (cam tay)) co soi viet nam ) or ( chuong trinh cac van van ((ca tay) or (cam tay)) cot soi viet nam ))) or ( chuong trinh sau ((lan va) OR (lanh va)) cao cay dong hoc viet nam ))".
• Adding a wildcard symbol may retrieve word variants: (((( chuong trinh cao tan van ((ca tay) or (cam tay)) co soi viet nam ) or ( chuong trinh cac van van ((ca tay) or (cam tay)) cot soi viet nam ))) or ( chuong trinh sau ((lan va) OR (lanh va)) cao cay dong hoc viet nam ))*.