Perhaps you should try some spelling variations:
nijhoff book » nijhoff boston
book titless » book titles, book title, ebook title
nijhoff op » nijhoff _, nijhoff j
op titles » up titles, comp titles, job titles

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 titless ) OR ( nijhoff op titles )).
• Adding a wildcard symbol may retrieve word variants: (( nijhoff book titless ) or ( nijhoff op titles ))*.