I agree with Nitro - you need to get to know as many people as possible, and let them know you are looking for work.
Just wander into a charity shop and volunteer your time, or ring the multicultural affairs office and offer to tutor English to immigrants. You don't need a car or a qualification for this. (With tutoring, the teacher supplies you with the lesson plan, and you just sit there around the table, go through the lesson and readings, talk and correct their English)
Both places will increase your network of acquaintances and thus your chances.
Are you political? If so, join the party you support and go help out. If you are a leftie like me, go on the Labour Day marches - you meet hundreds there.
My lads joined the Australian Army reserves as officer cadets when they were at uni, and this helped them immensely in their job seeking. The oldest is inactive now, after reaching the rank of lieutenant, but the training helped him get a really good teaching position when he left uni, and the army training helped him in his work. The youngest stayed in the Reserves - he's a captain now - and again, it helps his civilian career.
Are you in a union? If not, join the union most relevant to your line of work and volunteer at their office. Again, this will give you more contacts.
Sometimes, just plain luck plays a part. When I was 42 I tried to get back into the workforce when my youngest started school. Age prejudice was rife. After 6 months I got my first interview, for a bookkeeping job. Unbeknown to me, the firm needed someone with foreign languages, and I had French and German, so I got the job - even though others interviewed were no doubt much better bookkeepers, and much younger!!
So - I wish you all the best luck in the world!!!