Perhaps you should try some spelling variations:
"modified motion optimization algorithms" » "modified motion optimisation algorithm", "modified motion estimation algorithms", "modified motion estimation algorithm", "modified policy optimization algorithms", "modified allocation optimization algorithms"
"modified learning convolution algorithm" » "modified learning convolution algorithms", "modified learning evolution algorithm", "modified learning solution algorithm", "mobile learning convolution algorithm", "modified caging convolution algorithm"

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

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