Perhaps you should try some spelling variations:
"endoscopic further applications" » "endoscopic other applications", "endoscopic forehead applications"
"endoscopic future applications" » "endoscopic suture applications", "endoscopy future applications", "endoscopic features applications"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"endoscopic further applications\") OR (\"endoscopic future applications\"))".
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