Perhaps you should try some spelling variations:
nurse » nurkse, purse
nurses » nurkses, purses
purses » purse, purposes
purves » curves
practitioner » practitioners
curse » course, curso
cure » cubre, cuore, care
cursa » cursan, curso, cura
curson » courson, curso, cursos

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

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