Perhaps you should try some spelling variations:
"post modeling algorithm" » "post making algorithm" (Expand Search), "best modeling algorithm" (Expand Search), "forest modeling algorithm" (Expand Search), "joint modeling algorithm" (Expand Search)
"elements tree algorithms" » "elements three algorithms" (Expand Search), "elements art algorithms" (Expand Search), "elements two algorithms" (Expand Search), "elements ree algorithms" (Expand Search), "element ree algorithms" (Expand Search), "elements res algorithms" (Expand Search)
"element box algorithm" » "element best algorithm" (Expand Search), "element _ algorithm" (Expand Search), "element ii algorithm" (Expand Search)

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("post modeling algorithm") OR ((("elements tree algorithms") OR ("element box algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"post modeling algorithm\") OR (((\"elements tree algorithms\") OR (\"element box algorithm\"))))".
• Removing quotes may allow a broader search: (( post modeling algorithm ) OR ((( elements tree algorithms ) OR ( element box algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("post modeling algorithm") OR ((("elements tree algorithms") OR ("element box algorithm"))))*.