Perhaps you should try some spelling variations:
"modified make optimisation algorithm" » "modified make optimization algorithms", "modified make estimation algorithm", "modified make estimation algorithms", "modified market optimization algorithm", "modified game optimization algorithm", "modified stage optimization algorithm", "modified male optimisation algorithm"
"modified time approximation algorithms" » "modified one approximation algorithms", "modified _ approximation algorithms", "modified bi1 approximation algorithms", "modified male approximation algorithms"

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: (("modified time approximation algorithms") or ("modified make optimisation algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified time approximation algorithms") OR ("modified make optimisation algorithm")).
• Removing quotes may allow a broader search: (( modified time approximation algorithms ) or ( modified make optimisation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified time approximation algorithms") or ("modified make optimisation algorithm"))*.