Perhaps you should try some spelling variations:
approximation algorithm » approximation algorithms
quantization algorithm » estimation algorithm
passive quantization » adaptive quantization
seird approximation » time approximation, network approximation
modified passive » modified adaptive
modified seird » modified near

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: (( modified seird approximation algorithm ) OR ( modified passive quantization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (( modified seird approximation algorithm ) or ( modified passive quantization algorithm ))*.