Perhaps you should try some spelling variations:
practitioners primary » practitioners summary, practitioners part, practitioners vary
practice literature » didactic literature, selective literature
criminal lead » criminal legal, criminal law, criminal la
criminal lean » criminal legal, criminal law, criminal en
lean practice » lean practices, plan practice, leading practice
criminal end » criminal en, criminal mind, criminals spend

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: (( international ((criminal lead) OR (criminal end)) practitioners primary ) OR ( international criminal lean practice literature )).
• Adding a wildcard symbol may retrieve word variants: (( international ((criminal lead) or (criminal end)) practitioners primary ) or ( international criminal lean practice literature ))*.