Perhaps you should try some spelling variations:
"data tracking algorithms" » "data training algorithms" (Expand Search), "data learning algorithms" (Expand Search), "data making algorithm" (Expand Search), "path tracking algorithms" (Expand Search), "data backing algorithms" (Expand Search), "uav tracking algorithms" (Expand Search)
"element method algorithm" » "element network algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mean algorithm" (Expand Search)
"data using algorithm" » "data using algorithms" (Expand Search), "data routing algorithm" (Expand Search), "data fusion algorithm" (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: (((("data using algorithm") OR ("data tracking algorithms"))) OR ("element method algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"data using algorithm\") OR (\"data tracking algorithms\"))) OR (\"element method algorithm\"))".
• Removing quotes may allow a broader search: (((( data using algorithm ) OR ( data tracking algorithms ))) OR ( element method algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("data using algorithm") OR ("data tracking algorithms"))) OR ("element method algorithm"))*.