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

Try widening your search to All Fields.

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

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