Perhaps you should try some spelling variations:
"notion optimization algorithms" » "notion optimisation algorithm", "notion estimation algorithms", "notion estimation algorithm", "network optimization algorithms", "policy optimization algorithms", "allocation optimization algorithms"
"write optimization algorithmssssssssss" » "write optimisation algorithmsssssssss", "write estimation algorithmssssssssss", "write estimation algorithmsssssssss", "game optimization algorithmssssssssss", "qoe optimization algorithmssssssssss", "stage optimization algorithmssssssssss"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("notion optimization algorithms") or ("write optimization algorithmssssssssss"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("notion optimization algorithms") OR ("write optimization algorithmssssssssss")).
• Removing quotes may allow a broader search: (( notion optimization algorithms ) or ( write optimization algorithmssssssssss )).
• Adding a wildcard symbol may retrieve word variants: (("notion optimization algorithms") or ("write optimization algorithmssssssssss"))*.