Perhaps you should try some spelling variations:
28electronic resource » electronic resource, electronic resources, electric resource
3.2 apache » 2.2 apache, 3.6 apache, 3.2.4 apache
34 apache » 3 apache, 33 apache, 3.6 apache
14 apache » 1 apache, 10 apache, 11 apache
4 apache » _ apache, 1 apache, 3 apache

Try widening your search to All Fields.

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: %22spark %28electronic resource %((3.2 apache) OR (((((34 apache) OR (14 apache))) OR (4 apache)))) software foundation%29%22.
• Adding a wildcard symbol may retrieve word variants: %22spark %28electronic resource %((3.2 apache) or (((((34 apache) or (14 apache))) or (4 apache)))) software foundation%29%22*.