Perhaps you should try some spelling variations:
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
method algorithm » mom algorithm
bi1 optimisation » _ optimisation, _ optimization, qoe optimization
using method » nursing methods, focusing method, using metal
modified bi1 » modified _
code » core

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• Performing a fuzzy search may retrieve terms with similar spellings: (( code using method algorithm ) or ( modified bi1 optimisation algorithm ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( code using method algorithm ) OR ( modified bi1 optimisation algorithm )).
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