Can I increase strength of ECB by decorrelating input data with compression
One problem with this approach is that both most compression algorithms and most block ciphers in ECB mode are deterministic. In other words, if you encrypt the same text twice, even if it has been compressed before, this fact will be obvious from the ciphertext.

I'd recommend you to have a look at counter modes, in particular AES-GCM (Galois/Counter Mode). They allow you to perform encryption in parallel without suffering from the problem outlined above (provided you use different IVs for each plaintext, as you should).