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 (2002) 488 - 2:
Proposal for a Directive of the European Parliament and of the Council concerning the alignment of measures with regard
to security of supply for petroleum products