Perhaps you should try some spelling variations:
"modified invasive optimisation algorithm" » "modified invasive optimization algorithms", "modified invasive estimation algorithm", "modified invasive estimation algorithms", "modified passive optimisation algorithm"
"modified static optimizer algorithms" » "modified static optimized algorithms", "modified static optimized algorithm", "modified static optimization algorithms"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified invasive optimisation algorithm") OR ("modified static optimizer algorithms"))~.
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