Perhaps you should try some spelling variations:
disease progress » disease process (Expand search), disease progression (Expand search)
pythons python » python python (Expand search), pitons python (Expand search), piton python (Expand search)
decrease host » decreases post (Expand search), decrease costs (Expand search), decrease of (Expand search)
host diseases » hosts diseases (Expand search), host disease (Expand search), hose diseases (Expand search)
python code » python coding (Expand search), python redes (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 host diseases disease progress ) OR ( python code pythons python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease host diseases disease progress ) OR ( python code pythons python programming ))*.