Perhaps you should try some spelling variations:
"criminalistique informatique / enquetes" » "criminalite informatique / enquetes", "statistique informatique / enquetes"
"criminality informatique / enquetes" » "criminalite informatique / enquetes", "criminelles informatique / enquetes", "criminal information / enquetes"

Try widening your search to All Fields.

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: "((\"criminality informatique / enquetes\") OR (\"criminalistique informatique / enquetes\"))".
• Removing quotes may allow a broader search: (( criminality informatique / enquetes ) OR ( criminalistique informatique / enquetes )).
• Adding a wildcard symbol may retrieve word variants: (("criminality informatique / enquetes") OR ("criminalistique informatique / enquetes"))*.