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

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified learning convolution algorithm\") OR (\"defined network estimation algorithms\"))~".
• Removing quotes may allow a broader search: (( modified learning convolution algorithm ) OR ( defined network estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified learning convolution algorithm") OR ("defined network estimation algorithms"))*.