Perhaps you should try some spelling variations:
effective disease » effective distance (Expand search), infective diseases (Expand search), effective doses (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
python code » python coding (Expand search), python redes (Expand search)
code python » codigo python (Expand search), pacote python (Expand search)
disease pt » disease pd (Expand search), disease p (Expand search), disease pn (Expand search)
pt program » pt programa (Expand search), pet program (Expand search), it program (Expand search)

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

• Removing quotes may allow a broader search: (( developing effective disease pt program ) OR ( python code python python programming ))~.