Perhaps you should try some spelling variations:
practitioner » practitioners
perses » perseus, persas, perse
purves » curves
purse » pursue, pure, perse
curse » course, curso, cure
cursa » cursan, curso, cura
propose » proposed, propone, proponer
proponen » propone, proposed
cursos » curso, recursos

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( nurses practitioner ) OR ( ((((perses OR purves) OR (purse OR (curse OR cursa))) OR (propose OR proponen)) OR (cursos OR curvas)) practitioner ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( nurses practitioner ) OR ( ((((perses OR purves) OR (purse OR (curse OR cursa))) OR (propose OR proponen)) OR (cursos OR curvas)) practitioner ))".
• Adding a wildcard symbol may retrieve word variants: (( nurses practitioner ) OR ( ((((perses OR purves) OR (purse OR (curse OR cursa))) OR (propose OR proponen)) OR (cursos OR curvas)) practitioner ))*.