Perhaps you should try some spelling variations:
and processing » food processing (Expand search)
decrease root » decrease food (Expand search), decrease soon (Expand search), decreasing root (Expand search)
root diseases » foot diseases (Expand search), goat diseases (Expand search), rust diseases (Expand search)
piton python » pitons python (Expand search), in python (Expand search), with python (Expand search)
python api » python and (Expand search)
api piton » api python (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 root diseases AND processing ) OR ( python api piton python programming ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease root diseases and processing ) OR ( python api piton python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease root diseases and processing ) OR ( python api piton python programming ))*.