Perhaps you should try some spelling variations:
"modified stochastic approximation algorithms" » "modified diophantine approximation algorithms", "modified stochastic optimization algorithms"
"modified caging optimization algorithm" » "modified caging optimization algorithms", "modified caging optimisation algorithm", "modified caging estimation algorithm", "modified staffing optimization algorithm"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("modified caging optimization algorithm") or ("modified stochastic approximation algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified caging optimization algorithm") OR ("modified stochastic approximation algorithms"))*.
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