Perhaps you should try some spelling variations:
"modified write optimisation algorithmss" » "modified write optimisation algorithm", "modified write optimization algorithms", "modified write estimation algorithms"
"modified objective allocation algorithms" » "modified objective estimation algorithms", "modified objective approximation algorithms"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified write optimisation algorithmss") OR ("modified objective allocation algorithms"))~.
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