Perhaps you should try some spelling variations:
"modified qoe optimization algorithms" » "modified qoe optimisation algorithm", "modified qoe estimation algorithms", "modified qoe estimation algorithm", "modified game optimization algorithms", "modified _ optimization algorithms", "modified stage optimization algorithms", "modified male optimization algorithms", "modified bi1 optimization algorithms"
"model using methods algorithm" » "model nursing methods algorithm", "model making methods algorithm", "model counting methods algorithm", "code using methods algorithm", "models nursing methods algorithm", "powder using methods algorithm"

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