Perhaps you should try some spelling variations:
"closure property / protection" » "closure properties / protection"
"pore property / protection" » "baire property / protection", "whose property / protection", "have property / protection"

Try widening your search to All Fields.

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"closure property / protection\") OR (\"pore property / protection\"))".
• Removing quotes may allow a broader search: (( closure property / protection ) OR ( pore property / protection )).
• Adding a wildcard symbol may retrieve word variants: (("closure property / protection") OR ("pore property / protection"))*.