passiflora (passion fruit, beautiful exotic looking flowers)
Guinea gold vine (Hibbertia scandens, medium to slow growing, somewhere between vine and bush, big yellow flowers)
there are different types of jasmine, honeysuckle
possibly certain rambler roses (though you will need to be selective because many do not grow as well in tropical climates, maybe Lady Bank's rose or Devoniensis)
Crossvine (Bignonia capreolata, pretty flowers but does not have any scent)
Jade vine (Strongylodon macrobotrys, definitely tropical, stunning unusual colored flowers)
Odontadenia Macrantha
Artabotrys hexapetalus has a little bit of a vine habit