When searching in the Library for articles on culture, you will get quite a few results related to ethnic groups as well as the culture of an organization. To help focus the search so more relevant articles show up in the results list, search using the term "organizational culture". 

In the large search box on the Search page of this guide, type exactly: nursing "organizational culture"

Be sure to include the quotation marks around "organizational culture".  That tells the search engine to look for those words together. 

nursing "job satisfaction"

nursing "work environment"

You could also try:  

nursing interdepartmental

nursing professionalism