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