Perhaps you should try some spelling variations:
practitioner literature » practitioner signature, practices literature, practitioner interaction
practitioners primary » practitioners summary, practitioners part, practitioners vary
practice literature » didactic literature, selective literature
lead practitioners » lead practitioner, lean practitioners, legal practitioners
law practitioners » lean practitioners, a practitioners, how practitioners
criminal lead » criminal legal, criminal end, criminal la

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 law practitioners primary ) OR ((( international criminal lead practitioners primary ) OR ( international criminal lead ((practitioner literature) OR (practice literature)) )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( international criminal law practitioners primary ) or ((( international criminal lead practitioners primary ) or ( international criminal lead ((practitioner literature) OR (practice literature)) ))))".
• Adding a wildcard symbol may retrieve word variants: (( international criminal law practitioners primary ) or ((( international criminal lead practitioners primary ) or ( international criminal lead ((practitioner literature) OR (practice literature)) ))))*.