If you sign-up at the
e-Liquid Recipes website, you can add all your flavour concentrates to your "stash" and then get it to tell you all the recipes you can make with them.
The only problem is not everyone calls each concentrate by the same name (eg. TPA / TFA / Perfumers Apprentice etc) so the best way to figure it out is to search through the website's 'Flavor List' (click on "User" to see a drop-down menu) for each one you've got and pick whichever name has been used the most. That way, it'll find the maximum number of recipes for your flavours.
This sounds a bit complicated but it's easy really.
One of the common additives used to give juices a nutty-biscuity flavour is Acetyl Pyrazine and almost everyone buys the version produced by TPA.
I've just searched the Flavor List for "Acetyl Pyrazine":
Now if I'd just blindly told it that I had some "Acetyl Pyrazine 5% (TPA)", I'd have missed most of the recipes made with it.
And if you want to get as many potential recipes, you'd add BOTH (maybe even the top three!) the most popular names people have used.
Once you've found the name for a concentrate you want to add to your 'stash', just click on the name in the list and it'll take you to a page with details for that ingredient.
Near the top of the page is a big green "Add to stash" button.
Click on that and it'll invite you to add loads of information that you don't need to worry about for now.
Just head back to the Flavor List to find your next one. (If you find pages of different versions of a flavour, click on "Recipes" at the top of the list and you'll see the most popular names used.)
It'll seem a bit long-winded as you enter all your concentrates but you only have to do it once!
When you've told it the names of all your concentrates, click on the User menu again and select "What can I make?" and it'll show you which recipes you can make with those flavour concentrates.
(If you want to be a bit more selective, select "Search by flavor stash" and you can select which of your flavours you'd like it to use in a recipe and it'll show you recipes for just those flavours.)
Good luck!