Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
force algorithm » source algorithm, search algorithm
modified adam » modified near
using force » using morse, cutting force
modified df » modified _, modified bi1
code » core

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( code using force algorithm ) OR ( ((modified df) OR (modified adam)) optimization algorithms ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( code using force algorithm ) or ( ((modified df) OR (modified adam)) optimization algorithms ))~".
• Adding a wildcard symbol may retrieve word variants: (( code using force algorithm ) or ( ((modified df) OR (modified adam)) optimization algorithms ))*.