Perhaps you should try some spelling variations:
"modified objective optimization algorithm" » "modified multiobjective optimization algorithm", "modified objective optimization algorithms", "modified objective optimisation algorithm", "modified objective estimation algorithm"
"bowler graining methods algorithm" » "bowler learning methods algorithm", "bowler learning method algorithm", "bowler making methods algorithm", "boiler graining methods algorithm", "towler graining methods algorithm"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("bowler graining methods algorithm") OR ("modified objective optimization algorithm"))~.
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