Perhaps you should try some spelling variations:
"modified bi1 optimization algorithms" » "modified bi1 optimisation algorithm", "modified bi1 estimation algorithms", "modified bi1 estimation algorithm", "modified _ optimization algorithms", "modified qoe optimization algorithms", "modified game optimization algorithms"
"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.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified learning method algorithm") OR ("modified bi1 optimization algorithms"))~.
• Removing quotes may allow a broader search: (( modified learning method algorithm ) or ( modified bi1 optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified learning method algorithm") or ("modified bi1 optimization algorithms"))*.