Complex sentence: After being thrown and taunted by Goku, Piccolo grows even further, to the size of a large building; this again works to Goku's advantage however, as he is able to enter Piccolo's mouth and then escape with the bottle where Kami is stored.
Split into simpler sentences: After being thrown and taunted by Goku, Piccolo grows even further, to the size of a large building. This was Goku's plan though, as he is able to enter Piccolo's mouth and then escape with the bottle where Kami is stored.