Perhaps you should try some spelling variations:
"modified rough approximation algorithm" » "modified rough approximation algorithms", "modified rough approximations algorithm", "modified one approximation algorithm"
"modified adaptive optimization algorithms" » "modified adaptive optimisation algorithm", "modified adaptive estimation algorithms", "modified adaptive estimation algorithm", "modified objective optimization algorithms", "modified adaptive quantization algorithms", "modified static optimization algorithms", "modified passive optimization algorithms"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified rough approximation algorithm") or ("modified adaptive optimization algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified rough approximation algorithm") OR ("modified adaptive optimization algorithms")).
• Removing quotes may allow a broader search: (( modified rough approximation algorithm ) or ( modified adaptive optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified rough approximation algorithm") or ("modified adaptive optimization algorithms"))*.