Perhaps you should try some spelling variations:
perse » pese, verse, persa
perseo » peseo, verseo, persao
persello » pesello, versello, persallo, perello
peso » pero, paso, pesto, pesos
eso » esto, esos
persas » personas
vera » era
sera » ser, era, sara
cursa » cursan, curso, cura

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 (((perseo OR (peso OR eso)) OR (persas OR (((vera OR ver) OR sera) OR vega))) OR persello)) OR (cubre OR cursa))) OR nurkse) practitioners~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((nurses OR ((perse OR (((perseo OR (peso OR eso)) OR (persas OR (((vera OR ver) OR sera) OR vega))) OR persello)) OR (cubre OR cursa))) OR nurkse) practitioners".
• Adding a wildcard symbol may retrieve word variants: ((nurses OR ((perse OR (((perseo OR (peso OR eso)) OR (persas OR (((vera OR ver) OR sera) OR vega))) OR persello)) OR (cubre OR cursa))) OR nurkse) practitioners*.