Perhaps you should try some spelling variations:
objective optimization » multiobjective optimization
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
mach algorithm » search algorithm, mom algorithm, mppt algorithm
code trinh » cong trinh, co trinh
trinh mach » tinh mach, trinh lich, trinh minh

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 ( code trinh mach algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( modified objective optimization algorithm ) OR ( code trinh mach algorithm ))*.