Perhaps you should try some spelling variations:
optimisation algorithm » optimization algorithm (Expand Search), optimization algorithms (Expand Search), identification algorithm (Expand Search)
maximization algorithm » optimization algorithm (Expand Search), optimization algorithms (Expand Search), classification algorithm (Expand Search)
based process » based processes (Expand Search), based probes (Expand Search), based proteins (Expand Search)
linac based » lines based (Expand Search)

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