Before the latest expansion, the max level for spells that could be researched was 75. It looks like that has been moved up to 80 with House of Thule. Although I am unable to find recipes for most of the spells at the moment, I have found some. The new component for these higher level spells is Fine Runic Charta Arcanum. I have only seen this in Old Blackburrow. If you come across any of these or something similiar, guild bank them or give them to me, please.
If you are still missing spells up to 80, get the exact names and in-game email them to me and I'll continue to try and track down the recipes until I can make them.
Level 115 Druid, Level 115 Enchanter, Level 115 Paladin
Drinal - Maelin Starpyre Server