Perhaps you should try some spelling variations:
integration differentiation » integration differential, integro differentiation, migration differentiation
basic multidimensional » based multidimensional, fast multidimensional, metric multidimensional
differentiation basic » differentiation based, differentiation fast, differentiation a
array paving » array planning, array imaging, array probing
array string » array strong, arrays strings, array sharing

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• Performing a fuzzy search may retrieve terms with similar spellings: integration differentiation basic multidimensional ((array paving) or (array string))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: integration differentiation basic multidimensional ((array paving) OR (array string)).
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