Use quotation marks to search for an "exact phrase". Append an asterisk (*) to a search term to find variations of it (transp*, 32019R*). Use a question mark (?) instead of a single character in your search term to find variations of it (ca?e finds case, cane, care).
COM (2009) 149:
Communication from the Commission to the European Parliament, the Council, the European Economic and Social Committee and
the Committee of the Regions on Critical Information Infrastructure Protection - "Protecting Europe from large scale cyber-attacks
and disruptions: enhancing preparedness, security and resilience" {SEC(2009) 399} {SEC(2009) 400}