Perhaps you should try some spelling variations:
objective optimization » multiobjective optimization
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
models using » model using, models nursing, code using
ph algorithm » _ algorithm, mppt algorithm, qspr algorithm
using ph » using pre, using a, using _

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 objective optimization algorithm ) OR ( models using ph algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( modified objective optimization algorithm ) OR ( models using ph algorithm ))*.