Perhaps you should try some spelling variations:
perse » perseo, pese, verse
persano » peruano, peruanos, pegasano
persino » versino, persico, persing
peso » pero, paso, eso
persas » personas
pesello » persello, perello, polesello
curse » course, cure
cursa » cursan, cura, curia

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((nurses OR ((perse OR ((((persano OR persino) OR peso) OR (persas OR (era OR vega))) OR pesello)) OR ((curse OR curso) OR cursa))) OR nurkse) practitioners~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((nurses OR ((perse OR ((((persano OR persino) OR peso) OR (persas OR (era OR vega))) OR pesello)) OR ((curse OR curso) OR cursa))) OR nurkse) practitioners".
• Adding a wildcard symbol may retrieve word variants: ((nurses OR ((perse OR ((((persano OR persino) OR peso) OR (persas OR (era OR vega))) OR pesello)) OR ((curse OR curso) OR cursa))) OR nurkse) practitioners*.