It's been a looonnnggg time since I heard that name. It's the first brand I ever vaped.
If I recall, Liqua is made in China by a parent company located somewhere in EU. I also seem to recall reading on their site a couple years ago that they make their own flavorings, though I could be mistaken on that. Hence, in a quest to clone their juice I'd forget entirely about TFA and start with something more international like FlavourArt, perhaps Desert Ship being a point of departure.
Though, it shouldn't be difficult to brew a good Turkish that rivals Liqua. There are many great Turkish concentrates.