Perhaps you should try some spelling variations:
purse » pursue, pure, perse
purses » pursues, pures, perses, purves
practitioner » practitioners
purposes » purpose
proposes » proposed, propose, propone
curses » courses, cursos, cursus, cursas
curse » course, curso, cursa
curves » curvas

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( (nurkse OR purse) practitioner ) OR (( (nurses OR (purses OR (purposes OR proposes))) OR ((curses OR curse) OR curves)) practitioner ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( (nurkse OR purse) practitioner ) OR (( (nurses OR (purses OR (purposes OR proposes))) OR ((curses OR curse) OR curves)) practitioner ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( (nurkse OR purse) practitioner ) OR (( (nurses OR (purses OR (purposes OR proposes))) OR ((curses OR curse) OR curves)) practitioner ))*".