The fare rules allow max four flight segments in each continent (six in North America), you have too many in Asia.
What I do is buy my own side tickets to visit additional places. So, for example, I'll have an RTW stop in Singapore, and get my own ticket SIN-KUL-SIN. As far as the RTW is concerned, I have a stop in SIN that's x days. It doesn't matter that some of those days I'm actually flying to KUL, staying there, and flying back. When segment-constrained, it makes sense to use RTW segments for long flights and buy your own for short ones.