Perhaps you should try some spelling variations:
specialist librarians » special libraries
specialist libraries » special libraries, specific libraries, spectral libraries
scientific libraries » specific libraries, scientific theories, science libraries

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

• If you are trying to use Boolean operators, they must be ALL CAPS: academic & ((((specialist libraries) OR (specialist librarians))) OR (((scientific libraries) OR (specific injuries)))).
• Adding a wildcard symbol may retrieve word variants: academic & ((((specialist libraries) or (specialist librarians))) or (((scientific libraries) or (specific injuries))))*.