Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithm" » "modified multiobjective optimization algorithm"
"model learning convolution algorithm" » "model learning convolution algorithms", "model learning evolution algorithm", "model learning solution algorithm", "mobile learning 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: "((\"model learning convolution algorithm\") OR (\"modified multiobjective estimation algorithm\"))~".
• Removing quotes may allow a broader search: (( model learning convolution algorithm ) OR ( modified multiobjective estimation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("model learning convolution algorithm") OR ("modified multiobjective estimation algorithm"))*.