Perhaps you should try some spelling variations:
"modified objective optimisation algorithmssss" » "modified objective optimization algorithms", "modified objective optimization algorithmsssss", "modified objective estimation algorithmssss", "modified objective estimation algorithmsssss", "modified objective optimization algorithmssss", "modified multiobjective optimization algorithmssss"
"modified caging optimisation algorithm" » "modified caging optimization algorithms", "modified caging estimation algorithm", "modified caging estimation algorithms", "modified staffing optimization algorithm"

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