Perhaps you should try some spelling variations:
vpython colisoes » vpython collisions (Expand search)
these processes » the processes (Expand search), thermal processes (Expand search), change processes (Expand search)
colisoes python » colisoes proton (Expand search), codigos python (Expand search), colisoes eletron (Expand search)
disease these » disease the (Expand search), disease three (Expand search), disease phase (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
in disease » skin diseases (Expand search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease in disease these processes ) OR ( vpython colisoes python python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease in disease these processes ) OR ( vpython colisoes python python programming ))*.