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