Perhaps you should try some spelling variations:
observed programming » oriented programming (Expand search), based programming (Expand search), bilevel programming (Expand search)
decrease observed » case observed (Expand search), decay observed (Expand search)
decrease will » decrease with (Expand search), decrease il (Expand search), decrease cell (Expand search)
python using » python coding (Expand search), python usando (Expand search), action using (Expand search)
pig python » in python (Expand search), via python (Expand search), api python (Expand search)
using pig » using peg (Expand search), using pid (Expand search), using pixe (Expand search)

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

• Removing quotes may allow a broader search: (( decrease will decrease observed programming ) OR ( python using pig python programming ))~.