Your best chance is to use very specific search strings in a search engine like Google or DuckDuckGo. Combine the book's title with terms indicating a PDF or document format. Try these variations:
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No. Fath al-Mu’in is also by al-Malibari but is a commentary on Qurrat al-‘Ayn . Jawahirul Lama’ah is considered more concise in some sections and more detailed in spirituality. Your best chance is to use very specific