Perhaps you should try some spelling variations:
modeling vpython » modeling method (Expand search)
decrease program » increase programme (Expand search), lease program (Expand search), case program (Expand search)
python modeling » motion modeling (Expand search), python coding (Expand search), python morelia (Expand search)
vpython python » python python (Expand search), pythons python (Expand search), piton python (Expand search)
rate decrease » rats decreases (Expand search), ratio decrease (Expand search), rate increase (Expand search)
code rate » code rape (Expand search), code state (Expand search), code rac (Expand search)

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

• Removing quotes may allow a broader search: (( code rate decrease program programa ) OR ( python modeling vpython python programming ))~.