Perhaps you should try some spelling variations:
and processing » food processing (Expand search), and process (Expand search)
decrease foot » decrease food (Expand search), decreases food (Expand search), decreased food (Expand search)
python regius » python redes (Expand search)
foot disease » foot diseases (Expand search), tooth disease (Expand search), root diseases (Expand search)
disease and » diseases and (Expand search)
regius with » regions with (Expand search), region with (Expand search), regime with (Expand search)

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: (( decrease foot disease AND processing ) OR ( python regius with python programming ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease foot disease and processing ) OR ( python regius with python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease foot disease and processing ) OR ( python regius with python programming ))*.