Perhaps you should try some spelling variations:
quantization algorithms » estimation algorithms
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
adaptive quantization » adaptive ventilation
modified invasive » modified passive
modified adaptive » modified passive

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( modified invasive optimization algorithms ) OR ( modified adaptive quantization algorithms ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( modified invasive optimization algorithms ) OR ( modified adaptive quantization algorithms ))".
• Adding a wildcard symbol may retrieve word variants: (( modified invasive optimization algorithms ) OR ( modified adaptive quantization algorithms ))*.