"Vi\u1EC7t expansion" . "southward expansion" . "Nam ti\u1EBFn" . "Vietnamese southward expansion" . "migrated" . "southwards expansion (Nam ti\u1EBFn)" . "southward expansion (Nam ti\u1EBFn)" . "March to the South" . . "march to the south" . "nam ti\u1EBFn" . "southward march" . "their expansion to the south" . "southward territorial expansion" . . . "borders expanded" . "Southward Expansion" . "Nam Ti\u1EBFn" . . "Southward March" . . "Vietnam conquered territory" . "expand the country" . "arrival of the Vietnamese" . "Southern expansion" . "Vietnam's conquest of previously Cambodian lands" . "expand the realm" . "Nam ti\u1EBFn" . "expand southward" . "expanded southward" . "southwards expansion" .