1. เช่น - example
2. จึง - therefore. Sometimes it's little connecting words like these that really polish up your speech. Instead of churning out choppy small sentences and letting the listener make the (hopefully) obvious connections on their own (which sounds like beginner's speech) having some conjunctions and connective words like this makes a train of thought much more fluid. They're often small to begin with, and (at least in Thai and Chinese) don't conjugate or change form; they just hold a place, and that's it. Good stuff to know.