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 (1991) 380:
Proposal for a COUNCIL REGULATION ( EEC ) amending Regulation ( EEC ) No 3906/89 in order to extend economic aid to include
other countries in Central and Eastern Europe