Perhaps you should try some spelling variations:
quantization algorithm » estimation algorithm
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
passive quantization » adaptive quantization
changing estimation » channel estimation, charging station
modified changing » modified caging
modified passive » modified adaptive

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

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