I'm staying in AU, going back to the US on 3/17, and needing to find work ASAP. Advice/Ideas/Help?

I've been checking craigslist daily, which is getting about 8-14 applications a day, and while I've heard back from a few it's been more of a 'Give us a call when you're in the states/Keep in contact' response. Which is good, and means they're still oppurtunities, but I'm honestly worried about getting a job within a month of being in my new home. I've also applied online to several fast food joints and markets, but recieved no response and most of the sites have limited function/access since I'm applying from another country. If it's at all relevant, I'm moving to LA, and i have really limited phone access.

tl;dr: moving to LA in 3ish weeks from australia and if i dont find work asap im a bit fucked and im not sure what else to do but spam craigslist and mcdonalds/starbucks/safeway/etc