Perhaps you should try some spelling variations:
now entitled » new entitled, law entitled, crown entitled
nijhoff book » nijhoff boston, nijhoff op
book titles » book intitled
op entitled » one entitled, m.p entitled, ode entitled

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: (( nijhoff book titles ) OR ((( nijhoff book entitled ) OR ( nijhoff ((op entitled) OR (now entitled)) )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( nijhoff book titles ) or ((( nijhoff book entitled ) or ( nijhoff ((op entitled) OR (now entitled)) ))))".
• Adding a wildcard symbol may retrieve word variants: (( nijhoff book titles ) or ((( nijhoff book entitled ) or ( nijhoff ((op entitled) OR (now entitled)) ))))*.