Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, optimized algorithms
motion optimization » motion estimation, policy optimization, allocation optimization
qoe estimation » pose estimation, _ estimation, cover estimations
modified qoe » modified male, modified _, modified bi1

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( modified motion optimization algorithms ) or ( modified qoe estimation algorithm ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified motion optimization algorithms ) OR ( modified qoe estimation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (( modified motion optimization algorithms ) or ( modified qoe estimation algorithm ))*.