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"
"modified based evolution algorithm" » "modified based solution algorithm", "modified based evolutionary algorithm", "modified based convolution algorithms", "modified based evaluation algorithm", "modified based solutions algorithm", "modified sales evolution algorithm", "modified male evolution algorithm"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified allocation optimization algorithms") OR ("modified based evolution algorithm"))~.
• Removing quotes may allow a broader search: (( modified allocation optimization algorithms ) or ( modified based evolution algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified allocation optimization algorithms") or ("modified based evolution algorithm"))*.