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 (2010) 284:
Green Paper - Corporate governance in financial institutions and remuneration policies {COM(2010) 285 final} {COM(2010)
286 final} {SEC(2010) 669}