Perhaps you should try some spelling variations:
"query processing algorithm" » "query modeling algorithm" (Expand Search), "query routing algorithm" (Expand Search), "query tracking algorithm" (Expand Search), "pre processing algorithm" (Expand Search)
"elements rast algorithm" » "elements best algorithm" (Expand Search), "elements forest algorithm" (Expand Search), "elements based algorithm" (Expand Search), "elements res algorithm" (Expand Search), "elements wt algorithm" (Expand Search)
"element data algorithm" » "element data algorithms" (Expand Search), "element update algorithm" (Expand Search), "element atlas algorithm" (Expand Search), "settlement data algorithm" (Expand Search), "relevant data algorithm" (Expand Search), "movement data algorithm" (Expand Search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("query processing algorithm") OR ((("elements rast algorithm") OR ("element data algorithm"))))~.
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• Removing quotes may allow a broader search: (( query processing algorithm ) OR ((( elements rast algorithm ) OR ( element data algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("query processing algorithm") OR ((("elements rast algorithm") OR ("element data algorithm"))))*.