I'm confused. Theory is (or should be) the study of how a composition works/is put together. Perhaps you haven't found a serious enough book? One that goes beyond chord symbols and simple progressions? Any of the books you've read explain the common tone diminished seventh, the German augmented sixth, diminished 7th modulations, binary form? Here's the way I see it: These books do not (if you're in the compositional mind) tell you how to write a composition, they tell you how to revise a composition. You write your composition first, and then you insert the techniques you learned about in theory and see if they fit. You learn about composition by analyzing the works of others, not by following some formulas presented in a composition book.
Anyways, you're not going to find what you want on the bookshelves in Borders, that's for sure. If you're serious, you've got to expand to online shopping.