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).
SEC (1991) 2120 - 3:
Proposal for a COUNCIL REGULATION ( ECSC, EEC, EURATOM) AMENDING THE STAFF REGULATIONS OF OFFICIALS AND THE CONDITIONS OF
EMPLOYMENT OF OTHER SERVANTS OF THE EUROPEAN COMMUNITIES