Perhaps you should try some spelling variations:
"modified invasive optimization algorithms" » "modified invasive optimisation algorithm", "modified invasive estimation algorithms", "modified invasive estimation algorithm", "modified passive optimization algorithms"
"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.

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