Perhaps you should try some spelling variations:
spatialite sites » spatialite et (Expand Search)
taking algorithm » cosine algorithm (Expand Search)
using algorithm » cosine algorithm (Expand Search)
spatialite data » spatialite et (Expand Search)
sites using » systems using (Expand Search), system using (Expand Search), brines using (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( spatialite sites using algorithm ) OR ( spatialite data taking algorithm ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( spatialite sites using algorithm ) OR ( spatialite data taking algorithm ))".
• Adding a wildcard symbol may retrieve word variants: (( spatialite sites using algorithm ) OR ( spatialite data taking algorithm ))*.