Perhaps you should try some spelling variations:
"modified based evolution algorithm" » "modified based solution algorithm", "modified based evolutionary algorithm", "modified based convolution algorithms", "modified based evaluation algorithm", "modified based solutions algorithm", "modified sales evolution algorithm", "modified male evolution algorithm"
"modified network approximation algorithms" » "certified network approximation algorithms", "defined network approximation algorithms", "modified near approximation algorithms"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("modified based evolution algorithm") or ("modified network approximation algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified based evolution algorithm") OR ("modified network approximation algorithms")).
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