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 (2003) 446:
Proposal for a Directive of the European Parliament and of the Council amending Directive 77/799/EEC concerning mutual assistance
by the competent authorities of the Member States in the field of direct and indirect taxation