Perhaps you should try some spelling variations:
parameters optimisation » parameter optimization, parameter estimation
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
method algorithm » mom algorithm
using lm » using l, using alma, using low
using lc » using c, using l, using low

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ((using lm) OR (using lc)) method algorithm ) or ( modified parameters optimisation algorithm ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((using lm) OR (using lc)) method algorithm ) OR ( modified parameters optimisation algorithm )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((using lm) OR (using lc)) method algorithm ) or ( modified parameters optimisation algorithm ))".
• Adding a wildcard symbol may retrieve word variants: (( ((using lm) OR (using lc)) method algorithm ) or ( modified parameters optimisation algorithm ))*.