Perhaps you should try some spelling variations:
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
objective estimation » objective optimization, objective allocation
solution algorithm » evolution algorithm, convolution algorithms, evolutionary algorithm
modified made » modified male, modified adam, modified df
made solution » model solutions, water solution, nacl solution

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

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