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 (2004) 636:
Communication from the Commission to the European Parliament and the Council - Moving to the deployment and operational
phases of the European satellite radionavigation programme