Perhaps you should try some spelling variations:
"a optimization algorithms" » "a optimisation algorithm", "a estimation algorithms", "a optimized algorithms", "_ optimization algorithms", "_ optimisation algorithms", "game optimization algorithms"
"_ solution algorithm" » "_ evolution algorithm", "_ convolution algorithms", "_ evolutionary algorithm", "_ solutions algorithm"
"policy estimation algorithm" » "policy optimization algorithm", "pose estimation algorithm", "motion 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: (((("a optimization algorithms") or ("_ solution algorithm"))) or ("policy estimation algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("a optimization algorithms") OR ("_ solution algorithm"))) OR ("policy estimation algorithm")).
• Removing quotes may allow a broader search: (((( a optimization algorithms ) or ( _ solution algorithm ))) or ( policy estimation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("a optimization algorithms") or ("_ solution algorithm"))) or ("policy estimation algorithm"))*.