Perhaps you should try some spelling variations:
leaves decrease » leaves increase (Expand search), lesions decrease (Expand search), changes decrease (Expand search)
decayed leaves » detached leaves (Expand search), damaged leaves (Expand search)
bone processes » zone processes (Expand search), coke processes (Expand search), dose processes (Expand search)
decrease bone » decreased bone (Expand search), decreases bone (Expand search), increase bone (Expand search)
python based » action based (Expand search)
iton python » piton python (Expand search), pitons python (Expand search), in python (Expand search)
based iton » based ion (Expand search), based ito (Expand search), based in (Expand search)

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: "(( decayed leaves decrease bone processes ) OR ( python based iton python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decayed leaves decrease bone processes ) OR ( python based iton python programming ))*.