Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
approximation algorithm » approximation algorithms
optimized algorithms » optimized algorithm, optimizer algorithms
one approximation » time approximation, _ approximation, rough approximations
pose » poses, post, jose

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( pose ((optimized algorithms) OR (optimization algorithms)) ) or ( one approximation algorithm ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( pose ((optimized algorithms) OR (optimization algorithms)) ) OR ( one approximation algorithm )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( pose ((optimized algorithms) OR (optimization algorithms)) ) or ( one approximation algorithm ))".
• Adding a wildcard symbol may retrieve word variants: (( pose ((optimized algorithms) OR (optimization algorithms)) ) or ( one approximation algorithm ))*.