Perhaps you should try some spelling variations:
diseases plasma » decreases plasma (Expand search), diseases plants (Expand search), diseases plant (Expand search)
plasma proteins » plant proteins (Expand search)
decrease root » decrease food (Expand search), decrease soon (Expand search), decreasing root (Expand search)
root diseases » foot diseases (Expand search), goat diseases (Expand search), rust diseases (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
python api » python and (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 root diseases plasma proteins ) OR ( python api python python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease root diseases plasma proteins ) OR ( python api python python programming ))*.