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