Perhaps you should try some spelling variations:
"binary based level optimization algorithm" » "binary based based optimization algorithm" (Expand Search)
"linac caused global optimization algorithm" » "linac cause global optimization algorithm" (Expand Search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("binary based level optimization algorithm") OR ("linac caused global optimization algorithm"))~.
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• Removing quotes may allow a broader search: (( binary based level optimization algorithm ) OR ( linac caused global optimization algorithm )).
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