Perhaps you should try some spelling variations:
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
method algorithm » mom algorithm
focusing method » forecasting method
code focusing » code using
df estimation » _ estimation
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: "(( code focusing method algorithm ) OR ( modified df estimation algorithms ))~".
• Adding a wildcard symbol may retrieve word variants: (( code focusing method algorithm ) OR ( modified df estimation algorithms ))*.