Perhaps you should try some spelling variations:
approximation algorithm » approximation algorithms
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
motion optimization » motion estimation, policy optimization, allocation optimization
time approximation » one approximation, _ approximation
modified time » modified bi1, modified male

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( modified motion optimization algorithms ) OR ( modified time approximation algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( modified motion optimization algorithms ) OR ( modified time approximation algorithm ))*.