Does that mean that even though I'm starting in Asia, I can skip the South Pacific continent region and just purchase a 3 continent ticket: Asia, South America and Europe?

I've downloaded the OneWorld timetable program and can't seem to find any flights for the life of me leaving from anyplace in South America (eg. Rio de Janeiro, Buenos Aires) to North Africa (eg. Cairo, Tangier or Casablanca). Any help would be great! Dates don't matter, I'm just looking around right now.

I feel like I may be losing money since I will purchase the RTW ticket which includes the last intercontinental leg from Europe back here to Asia, but we're wanting to take the Trans-Siberian train journey from Europe (Moscow) back here to Beijing.

Thanks!