Perhaps you should try some spelling variations:
parameters optimization » parameter optimization, parameter estimation
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
dau algorithm » adam algorithm, _ algorithm, mom algorithm
code phap » de phap
che phap » che pham, he phap, theo phap

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

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