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 (1988) 759 - 2:
PROPOSAL FOR A DIRECTIVE AMENDING DIRECTIVE 85/3 ON THE WEIGHTS AND DIMENSIONS AND CERTAIN OTHER TECHNICAL CHARACTERISTICS
OF CERTAIN ROAD VEHICLES