Perhaps you should try some spelling variations:
"specialist neurological vendors" » "specialised neurological vendors", "specialists neurologists vendors", "specific neurological vendors", "specialist neurological center", "specialist neurological tumors", "specialist neurological borders"
"specialist periodical returns" » "specialized periodicals returns", "specialist medical returns", "specialist periodical sets", "specialist period returns"
"socialism periodicals returns" » "alcoholism periodicals returns", "society periodicals returns", "socialism political returns", "socialism periodical structures", "socialism periodicals regularly", "socialism periodicals internet"

Try widening your search to All Fields.

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: (("specialist neurological vendors") OR ((("specialist periodical returns") OR ("socialism periodicals returns")))).
• Removing quotes may allow a broader search: (( specialist neurological vendors ) or ((( specialist periodical returns ) or ( socialism periodicals returns )))).
• Adding a wildcard symbol may retrieve word variants: (("specialist neurological vendors") or ((("specialist periodical returns") or ("socialism periodicals returns"))))*.