Perhaps you should try some spelling variations:
"defined network optimization algorithms" » "defined network optimisation algorithm", "defined network estimation algorithms", "defined network estimation algorithm"
"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.

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