Perhaps you should try some spelling variations:
decreased decrease » decreases disease (Expand search), decrease release (Expand search)
decrease processes » disease processes (Expand search), defense processes (Expand search), decay processes (Expand search)
tumors decreased » towards decreased (Expand search), to decreased (Expand search), tumors treated (Expand search)
sample tumors » sample errors (Expand search), some tumors (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
python api » python and (Expand search)

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

• Removing quotes may allow a broader search: (( sample tumors decreased decrease processes ) OR ( python api python python programming ))~.