Perhaps you should try some spelling variations:
decrease their » decrease the (Expand search), increase their (Expand search), decreases the (Expand search)
their problems » the problems (Expand search)
pattern python » pattern action (Expand search), pattern method (Expand search)
based pattern » based battery (Expand search), based plasters (Expand search), mapped pattern (Expand search)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease of (Expand search)
and decrease » and decreases (Expand search), and decreased (Expand search), and increase (Expand search)
action based » reaction based (Expand search), function based (Expand search)

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( decrease AND decrease their problems ) OR ( action based pattern python programming ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease and decrease their problems ) OR ( action based pattern python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease and decrease their problems ) OR ( action based pattern python programming ))*.