Perhaps you should try some spelling variations:
"modified rough approximation algorithm" » "modified rough approximation algorithms", "modified rough approximations algorithm", "modified one approximation algorithm"
"modified caging evolution algorithm" » "modified caging solution algorithm", "modified caging evolutionary algorithm", "modified caging convolution algorithms", "modified aging evolution algorithm", "modified changing evolution algorithm", "modified charging evolution algorithm"

You may be able to get more results by adjusting your search query.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified caging evolution algorithm") OR ("modified rough approximation algorithm")).
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