Perhaps you should try some spelling variations:
prevent decrease » prevents increase (Expand search), prevents increased (Expand search), elements decrease (Expand search)
phd programme » phd program (Expand search), and programme (Expand search), phd programs (Expand search)
code prevent » code precedent (Expand search), pode prevenir (Expand search), could prevent (Expand search)
decrease phd » decrease the (Expand search), decrease and (Expand search), decreased ph (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: (( code prevent decrease phd programme ) OR ( python code piton python programming ))~.