Perhaps you should try some spelling variations:
cooperation based » cooperation case, operation based, cooperation fast
based regression » based compression, data regression
array string » array strong, arrays strings, array sharing
array along » arrays long, array arcing, array paving
arrays ang » arrays a

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

• Performing a fuzzy search may retrieve terms with similar spellings: international cooperation based regression ((((array along) or (array string))) or (arrays ang))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: international cooperation based regression ((((array along) OR (array string))) OR (arrays ang)).
• Adding a wildcard symbol may retrieve word variants: international cooperation based regression ((((array along) or (array string))) or (arrays ang))*.