Perhaps you should try some spelling variations:
objective optimization » multiobjective optimization
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
predictive algorithm » predation algorithm, predators algorithm
a predictive » _ predictive, _ predicting, _ prediction
modified a » modified _, modified df, modified adam

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( modified a predictive algorithm ) or ( modified objective optimization algorithm ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified a predictive algorithm ) OR ( modified objective optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (( modified a predictive algorithm ) or ( modified objective optimization algorithm ))*.