Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
approximation algorithm » approximation algorithms
rough approximation » rough approximations, one approximation
jose optimization » qoe optimization, game optimization, robust optimization

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( jose optimization algorithms ) OR ( rough approximation algorithm ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( jose optimization algorithms ) OR ( rough approximation algorithm ))".
• Adding a wildcard symbol may retrieve word variants: (( jose optimization algorithms ) OR ( rough approximation algorithm ))*.