Perhaps you should try some spelling variations:
"_ optimisation algorithms" » "_ optimisation algorithm", "_ optimization algorithms", "_ approximation algorithms"
"_ estimation algorithms" » "_ optimization algorithms", "_ optimisation algorithm", "_ approximation algorithms"
"game estimation algorithm" » "pose estimation algorithm", "game optimization 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: (("game estimation algorithm") or ((("_ optimisation algorithms") OR ("_ estimation algorithms"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("game estimation algorithm") OR ((("_ optimisation algorithms") OR ("_ estimation algorithms")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"game estimation algorithm\") or (((\"_ optimisation algorithms\") OR (\"_ estimation algorithms\"))))".
• Removing quotes may allow a broader search: (( game estimation algorithm ) or ((( _ optimisation algorithms ) OR ( _ estimation algorithms )))).
• Adding a wildcard symbol may retrieve word variants: (("game estimation algorithm") or ((("_ optimisation algorithms") OR ("_ estimation algorithms"))))*.