Perhaps you should try some spelling variations:
quantization algorithm » estimation algorithm
passive quantization » adaptive quantization
graining methods » learning methods, learning method, making methods
modified passive » modified adaptive
mobile graining » mobile learning

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

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