Perhaps you should try some spelling variations:
formation problems » formation problem, information problems, information problem
based dispersion » wave dispersion, gas dispersion, based discussion
problems based » problem based, problems cases
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: formation problems based dispersion ((array format) or (((array string) or (array arcing))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: formation problems based dispersion ((array format) OR (((array string) OR (array arcing)))).
• Adding a wildcard symbol may retrieve word variants: formation problems based dispersion ((array format) or (((array string) or (array arcing))))*.