Obviously not all these combos can be used one after the other when looking at cool down times. Yet in the right sequence you can inflict some good damage. possibly keeping defeat at bay.
Toxic Shot + Stalker's Mark followed by Overwhelm + Shadowsmite, is a good start up for damage.
Triple Slash + Tiger Strike followed by Sunder Earth + Charge. watch your skills bar for timing of combos, usually when a skill is lit up(orange around it) is the best time to start combos.