Perhaps you should try some spelling variations:
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
bi1 optimization » _ optimization, qoe optimization, game optimization
source algorithm » our algorithm, search algorithm
using source » using force, using morse
modified bi1 » modified _

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( (code OR core) using source algorithm ) OR ( modified bi1 optimization algorithm ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( (code OR core) using source algorithm ) or ( modified bi1 optimization algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( (code OR core) using source algorithm ) or ( modified bi1 optimization algorithm ))*.