Perhaps you should try some spelling variations:
"nurkse practitioner" » "nurkse practitioners"
"nurses practitioner" » "nurses practitioners"
"purposes practitioner" » "purposes practitioners", "purpose practitioner", "proposes practitioner"
"curves practitioner" » "curves practitioners", "curvas practitioner"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("nurkse practitioner") OR ("nurses practitioner"))) OR ((("purposes practitioner") OR ("curves practitioner"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"nurkse practitioner\") OR (\"nurses practitioner\"))) OR (((\"purposes practitioner\") OR (\"curves practitioner\"))))".
• Removing quotes may allow a broader search: (((( nurkse practitioner ) OR ( nurses practitioner ))) OR ((( purposes practitioner ) OR ( curves practitioner )))).
• Adding a wildcard symbol may retrieve word variants: (((("nurkse practitioner") OR ("nurses practitioner"))) OR ((("purposes practitioner") OR ("curves practitioner"))))*.