Perhaps you should try some spelling variations:
decrease memory » decreased memory (Expand search), increases memory (Expand search), decrease theory (Expand search)
memory process » memory processes (Expand search), memory processing (Expand search), memoria processo (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
decrease toc » decrease of (Expand search), decrease the (Expand search), decrease on (Expand search)
toc decrease » to decrease (Expand search), the decrease (Expand search), not decrease (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 toc decrease memory process ) OR ( python _ python python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease toc decrease memory process ) OR ( python _ python python programming ))*.