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)
"elements method algorithm" » "elements mould algorithm" (Expand Search)
"element multi algorithm" » "element mould algorithm" (Expand Search), "element auction 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 multi algorithm") OR ("elements method algorithm"))) OR ("post routing algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element multi algorithm\") OR (\"elements method algorithm\"))) OR (\"post routing algorithm\"))".
• Removing quotes may allow a broader search: (((( element multi algorithm ) OR ( elements method algorithm ))) OR ( post routing algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element multi algorithm") OR ("elements method algorithm"))) OR ("post routing algorithm"))*.