Perhaps you should try some spelling variations:
"modified one approximation algorithm" » "modified one approximation algorithms", "modified time approximation algorithm", "modified _ approximation algorithm", "modified rough approximations algorithm", "modified male approximation algorithm", "modified near approximation algorithm", "modified orca approximation algorithm"
"modified adaptive ventilation algorithms" » "modified adaptive estimation algorithms", "modified adaptive estimation algorithm", "modified adaptive convolution algorithms", "modified adaptive quantization algorithms", "modified invasive ventilation algorithms", "modified passive ventilation algorithms"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified one approximation algorithm") OR ("modified adaptive ventilation algorithms"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified one approximation algorithm\") OR (\"modified adaptive ventilation algorithms\"))".
• Removing quotes may allow a broader search: (( modified one approximation algorithm ) OR ( modified adaptive ventilation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified one approximation algorithm") OR ("modified adaptive ventilation algorithms"))*.