Perhaps you should try some spelling variations:
"post routing algorithm" » "post cosine algorithm" (Expand Search), "most routing algorithm" (Expand Search), "cost routing algorithm" (Expand Search)
"element method algorithm" » "element mould algorithm" (Expand Search), "elements method algorithm" (Expand Search)
"relevant data algorithm" » "relevant jaya algorithm" (Expand Search), "relevant deer algorithm" (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 ((("post routing algorithm") OR ("relevant data algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"element method algorithm\") OR (((\"post routing algorithm\") OR (\"relevant data algorithm\"))))".
• Removing quotes may allow a broader search: (( element method algorithm ) OR ((( post routing algorithm ) OR ( relevant data algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("element method algorithm") OR ((("post routing algorithm") OR ("relevant data algorithm"))))*.