Perhaps you should try some spelling variations:
"modified lighting optimisation algorithm" » "modified lighting optimization algorithms", "modified lighting estimation algorithm", "modified lighting estimation algorithms", "modified caging optimisation algorithm"
"modified adaptive approximation algorithms" » "modified time approximation algorithms", "modified passive approximation algorithms"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified adaptive approximation algorithms") OR ("modified lighting optimisation algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified adaptive approximation algorithms\") OR (\"modified lighting optimisation algorithm\"))".
• Removing quotes may allow a broader search: (( modified adaptive approximation algorithms ) OR ( modified lighting optimisation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified adaptive approximation algorithms") OR ("modified lighting optimisation algorithm"))*.