Perhaps you should try some spelling variations:
purse » pure, perse, pulse
curse » course, cure
pursue » pursued
core » corte, score, more
practitioner » practitioners
cursa » cura, curia, curva
cursan » curan, curian, curvan
curan » curran, duran, cura

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((((nurse OR ((purse OR curse) OR pursue)) OR core) OR nurkse) OR nurses) practitioner ) OR ( ((cursa OR curso) OR (curan OR cursan)) practitioner ))~".
• Adding a wildcard symbol may retrieve word variants: (( ((((nurse OR ((purse OR curse) OR pursue)) OR core) OR nurkse) OR nurses) practitioner ) OR ( ((cursa OR curso) OR (curan OR cursan)) practitioner ))*.