Typographica "backticks" are actually accents as used in French and other languages. Like à for example. On a Mac keyboard (European) they are left of the backspace key. Hit that key plus pressing SHIFT and then hit SPACE. Otherwise they don't appear. Normally they are used to add an accent to a normal character.
`<?php printAllTagsFromAlbum(getAlbumTitle(""),false,"albums",'|','',false,true,1,5,1,50); ?>`
The call is still wrong. The first parameter must be the album folder name not the title. The title can be "album1" while the actual name on the filesystem can be "album2".
Also if the album is a subalbum of an album named "topalbum2" then the name of the subalbum is "topalbum2/album2".