Perhaps you should try some spelling variations:
multiobjective optimisation » multiobjective optimization, objective optimization
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
sach algorithm » search algorithm, graph algorithms, source algorithm
code sang » code using
sang sach » mang sach, ban sach, sang tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( modified multiobjective optimisation algorithm ) or ( code sang sach algorithm ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified multiobjective optimisation algorithm ) OR ( code sang sach algorithm )).
• Adding a wildcard symbol may retrieve word variants: (( modified multiobjective optimisation algorithm ) or ( code sang sach algorithm ))*.