That's 4 sectors within Asia, assuming you can ticket AKL-BKK as a single segment. remember that you can buy extra segments if you wish. And that the HKG-CMB flights go through BKK also, so you could do:

AKL-BKK-BOM-BKK-CMB-HKG-MNL-HKG-JNB

by buying the two extra segments. Alternatively, you could buy a one-way ticket separately (on Air Lanka I guess) for BOM-CMB which might well be cheaper than buying the two extra segments on the OWE.