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 (1980) 850 - 3:
Proposal for a Council Directive on the approximation of the laws of the Member States relating to tyre pressure gauges
for motor vehicles