Perhaps you should try some spelling variations:
"_ optimisation algorithm" » "_ optimization algorithms", "_ estimation algorithm", "_ estimation algorithms", "_ optimization algorithm"
"_ optimizer algorithmss" » "_ optimized algorithms", "_ optimized algorithm", "_ optimized algorithmss", "_ optimization algorithmss", "_ optimize algorithmss", "_ optimise algorithmss"
"game optimizer algorithms" » "game optimized algorithms", "game optimized algorithm", "game optimization algorithms", "same optimizer algorithms"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("game optimizer algorithms") or ((("_ optimisation algorithm") or ("_ optimizer algorithmss"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("game optimizer algorithms") OR ((("_ optimisation algorithm") OR ("_ optimizer algorithmss")))).
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• Adding a wildcard symbol may retrieve word variants: (("game optimizer algorithms") or ((("_ optimisation algorithm") or ("_ optimizer algorithmss"))))*.