Perhaps you should try some spelling variations:
bacteria python » bacteria without (Expand search)
decrease of » decrease in (Expand search)
of decrease » or decrease (Expand search), not decrease (Expand search), to decrease (Expand search)
decrease it » decrease its (Expand search), decrease in (Expand search), decrease il (Expand search)
python acid » python and (Expand search), python api (Expand search), python based (Expand search)
it process » point process (Expand search), audit process (Expand search), test process (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 of decrease it process ) OR ( python acid bacteria python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease of decrease it process ) OR ( python acid bacteria python programming ))*.