I'm trying to compile a route leaving Europe, visiting Australia, SWP (Fiji, Apia) and traveling then via the US back to Amsterdam. On the back I'm trying to tie a trip to the Middle East (Dubai) for a week.

The main issue is that I'm maxing out my miles and that I'm left with a number of segments.

Current routing is as follows (unfortunately not allowed to post screenshots):
OSL - DOH: 3082MI
DOH - ADL: 7030MI
ADL - ASP: 816MI

ASP - BNE: ground segment 1223MI

BNE-APW: 2433MI
APW-NAN: 753MI
NAN-LAX: 4796MI
LAX-DFW: 1073MI
DFW-AMS: 4921MI

AMS-DOH: 3062MI
DOH-DXB: 235MI
DXB-DOH: 235MI
DOH-OSL: 3082MI

Totaling: 33625MI - 13 segments

Does anyone have advise on potential improvements to further maximize, the Dubai trip is negotiable, Australia / SWP isn't (but routing can change). Took OSL as a starting point as this this is mentioned as one of the cheaper.