Where can I find complex recipes?
If you truly want complex, I’d suggest the Alinea cookbook by Grant Achatz. This book highlights molecular gastronomy techniques  and recipes featured at his award winning restaurant in Chicago.

Another route to go would be to look for traditional recipes from different cooking heritages.  The James Beard Foundation will annually award the best cookbooks from around the world. These will be high-quality, no shortcuts, or traditional cooking.