Perhaps you should try some spelling variations:
optimisation algorithmss » optimisation algorithm, optimization algorithms, estimation algorithm
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
objective estimation » objective optimization, objective allocation
df optimisation » _ optimisation, _ optimization, qoe optimization
modified df » modified _, modified adam, modified bi1

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( modified df optimisation algorithmss ) OR ( modified objective estimation algorithms ))~".
• Adding a wildcard symbol may retrieve word variants: (( modified df optimisation algorithmss ) OR ( modified objective estimation algorithms ))*.