Perhaps you should try some spelling variations:
"modified multiobjective optimized algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective optimized algorithm", "modified multiobjective optimizer algorithms"
"mobile graining methods algorithm" » "mobile learning methods algorithm", "mobile learning method algorithm", "mobile making methods algorithm"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("mobile graining methods algorithm") or ("modified multiobjective optimized algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("mobile graining methods algorithm") OR ("modified multiobjective optimized algorithms"))*.
• Removing quotes may allow a broader search: (( mobile graining methods algorithm ) or ( modified multiobjective optimized algorithms ))*.