Perhaps you should try some spelling variations:
"pre tracking algorithm" » "pre tracking algorithms" (Expand Search), "pre training algorithms" (Expand Search), "pre making algorithm" (Expand Search), "eye tracking algorithm" (Expand Search), "pre training algorithm" (Expand Search), "paper tracking algorithm" (Expand Search)
"element method algorithm" » "element network algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mean algorithm" (Expand Search)
"element two algorithms" » "element ml algorithms" (Expand Search), "element _ algorithms" (Expand Search), "element art algorithms" (Expand Search), "element te algorithms" (Expand Search)

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: (((("element method algorithm") OR ("element two algorithms"))) OR ("pre tracking algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element method algorithm\") OR (\"element two algorithms\"))) OR (\"pre tracking algorithm\"))".
• Removing quotes may allow a broader search: (((( element method algorithm ) OR ( element two algorithms ))) OR ( pre tracking algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element method algorithm") OR ("element two algorithms"))) OR ("pre tracking algorithm"))*.