Perhaps you should try some spelling variations:
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
method algorithm » mom algorithm
focusing method » forecasting method
df optimisation » _ optimisation, _ optimization, qoe optimization
model focusing » model using, total focusing
modified df » modified _, modified adam, modified bi1

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

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