Perhaps you should try some spelling variations:
cursa » cursan, cura, curia
perse » perseo, pese, verse
perdedor » perdedores, perder, perdidos
perdido » perdida
paso » caso
verso » versos
persas » personas
vera » vega, ver, sera
pesello » persello, perello, destello

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((cursa OR ((course OR ((((perse OR (perdedor OR perdido)) OR paso) OR ((verso OR persas) OR (vera OR era))) OR (pesello OR polesello))) OR curso)) OR nurkse) practitioners~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((cursa OR ((course OR ((((perse OR (perdedor OR perdido)) OR paso) OR ((verso OR persas) OR (vera OR era))) OR (pesello OR polesello))) OR curso)) OR nurkse) practitioners".
• Adding a wildcard symbol may retrieve word variants: ((cursa OR ((course OR ((((perse OR (perdedor OR perdido)) OR paso) OR ((verso OR persas) OR (vera OR era))) OR (pesello OR polesello))) OR curso)) OR nurkse) practitioners*.