Perhaps you should try some spelling variations:
decrease observed » case observed (Expand search), decay observed (Expand search)
observed problem » reserve problem (Expand search), server problem (Expand search), observed from (Expand search)
decrease that » decrease the (Expand search), decrease at (Expand search), decrees that (Expand search)
that decrease » that increase (Expand search), stent decrease (Expand search), that increases (Expand search)
piton python » pitons python (Expand search), in python (Expand search), with python (Expand search)
python code » python coding (Expand search), python redes (Expand search)
code piton » code position (Expand search)

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

• Removing quotes may allow a broader search: (( decrease that decrease observed problem ) OR ( python code piton python programming ))~.