Perhaps you should try some spelling variations:
"laser processing algorithm" » "laser processing algorithms" (Expand Search), "image processing algorithm" (Expand Search)
"element cscap algorithm" » "element cosine algorithm" (Expand Search), "elements cscap algorithm" (Expand Search)
"element tree algorithms" » "elements tree algorithms" (Expand Search), "element three algorithms" (Expand Search), "element free algorithms" (Expand Search)

Try widening your search to All Fields.

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