have you tried engineerjobs.com?
I can't believe I haven't heard of this before.
This is an awesome site which filters between disipline and city/state and actually has a ton of related jobs that Indeed didn't!
I apprriciate it!
This is odd imo. I've tried this website before and 99% of the civil engineer results are feeded from Indeed.com. Eventually I decided to give up using it and go back to Indeed.
So far I've basically used indeed/simplyhired/craigslist/LinkedIn(check out the group>jobs>job discussion page, you gonna be amazed). Adding to that there're some niche websites for specific discipline like dice.com for CS, yet I have little idea about such thing in civil field or IEOR field. For civil, I only know
http://www.schedulers.com/index.jsp. There're a couple of niche websites for oil&gas with overlay in civil so I guess there must be similar overlay fields for your IE jobs.
And regarding your terms, if I were you, I'd simply try following: "industrial", "project manager", "process", the shorter the better.
I know you'd have to spend much more time digging into the vast amount of search results, but some hidden gems are just evasive like that and too exact keywords ignore them. At the same time, you can try to check some of your professional alumni and their LinkedIn profiles to see if there're some common positions they've been in or common skills. Use that name of position or special skill as your keyword and I bet you will see more relevant results hidden before.
Always, keep trying hard and best wishes for you.