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 (2006) 545:
Communication from the Commission - Action Plan for Energy Efficiency: Realising the Potential {SEC(2006)1173} {SEC(2006)1174}
{SEC(2006)1175}
European Parliament ; Council of the European Union ; European Court of Auditors ; European Economic and Social Committee
; European Committee of the Regions