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 (2017) 428:
Proposal for a COUNCIL DECISION on the signing, on behalf of the European Union, of an Agreement between the European Union
and the Swiss Confederation on the linking of their Greenhouse Gas Emissions Trading Systems