Complex sentence: In July, 2005, Lu accepted the training tests of Japanese F.C. Tokyo, JEF United Ichihara Chiba, and Yokohama FC, but he failed to earn his position in all these clubs.
Split into simpler sentences: In July, 2005, Lu accepted the tests of Japanese Yokohama FC, JEF United Ichihara Chiba, and F.C. Tokyo. However, he failed to earn his position in all these clubs.