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 (2009) 188:
Comunicación de la Comisión al Parlamento Europeo y al Consejo - Ejecución de la política europea de vecindad en 2008 {SEC(2009)
511} {SEC(2009) 512} {SEC(2009) 513} {SEC(2009) 514} {SEC(2009) 515} {SEC(2009) 516} {SEC(2009) 517} {SEC(2009) 518} {SEC(2009)
519} {SEC(2009) 520} {SEC(2009) 521} {SEC(2009) 522} {SEC(2009) 523}