Perhaps you should try some spelling variations:
python collocation » python application (Expand search), the collocation (Expand search), non collocation (Expand search)
decrease processes » disease processes (Expand search), defense processes (Expand search), decay processes (Expand search)
decrease decrease » decrease release (Expand search), disease decreases (Expand search), decrease sucrose (Expand search)
collocation with » collocations with (Expand search), allocation with (Expand search), collection with (Expand search)
ctn decrease » can decrease (Expand search), to decrease (Expand search), on decrease (Expand search)
code ctn » code an (Expand search), code cpc (Expand search)

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

• Removing quotes may allow a broader search: (( code ctn decrease decrease processes ) OR ( python collocation with python programming ))~.