Perhaps you should try some spelling variations:
information sources » information resources, information services, information sciences
varying dimensional » casting dimensional, making dimensional, using dimensional
sources varying » sources learning, sources during, sources making
array string » array strong, arrays strings, array sharing
array arcing » array forming, array probing, array sharing

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: information sources varying dimensional ((((array string) or (array arcing))) or (array format))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information sources varying dimensional ((((array string) OR (array arcing))) OR (array format)).
• Adding a wildcard symbol may retrieve word variants: information sources varying dimensional ((((array string) or (array arcing))) or (array format))*.