Perhaps you should try some spelling variations:
"mesoporous inorganic" » "microporous organic", "mesoporous organic", "mesoversus inorganic"
"macroporous organic" » "microporous organic", "mesoporous organic"
"porous inorganic" » "porous organic", "versus inorganic"

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: (((("mesoporous inorganic") OR ("porous inorganic"))) OR ("macroporous organic")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"mesoporous inorganic\") OR (\"porous inorganic\"))) or (\"macroporous organic\"))".
• Removing quotes may allow a broader search: (((( mesoporous inorganic ) OR ( porous inorganic ))) or ( macroporous organic )).
• Adding a wildcard symbol may retrieve word variants: (((("mesoporous inorganic") OR ("porous inorganic"))) or ("macroporous organic"))*.