As a software engineer, I can tell you that it is not uncommon for the uninstall process to leave behind certain artifacts, which are invisible to ordinary search methods. This is true, even for big-name vendors like Adobe.
Unless you are comfortable playing with your machine, at the level of the Windows Registry and beyond, I suggest that you contact Adobe customer support.
Windows Registry aside, it is not uncommon for software to create hidden files, or files with obscure names, some of which may be in binary format. This helps protect them from software piracy, but can create big problems when we try to *really* uninstall things.
You might get some help with a Windows "cleaner" program - but then again you might not. Your best bet is Adobe.
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