Perhaps you should try some spelling variations:
book titless » book title, book tables
work titles » works titles, work title, works title
ebook title » book title
book titles » book entitled, book intitled

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