Perhaps you should try some spelling variations:
"modified network optimization algorithm" » "modified network optimization algorithms", "modified network optimisation algorithm", "modified network estimation algorithm", "certified network optimization algorithm", "defined network optimization algorithm", "modified near optimization algorithm"
"modified learning method algorithm" » "mobile learning method algorithm", "modified caging method algorithm", "modified learning mom algorithm", "modified learning methods algorithm", "modified graining methods algorithm", "modified learning emotion 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 network optimization algorithm\") OR (\"modified learning method algorithm\"))~".
• Removing quotes may allow a broader search: (( modified network optimization algorithm ) OR ( modified learning method algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified network optimization algorithm") OR ("modified learning method algorithm"))*.