Hi Joyann
When I first started out I was scanning and replying to ads. I did also place an ad once in a while but honestly, I never rec'd a single inquiry that way.
I doubt you're doing anything 'wrong' when replying to ads - but I might suggest taking a look at your 'standard' reply (if you have one) and getting rid of it entirely. I'm a personal fan of originality and so tried to always offer something unique in my own replies to potential clients. I also alway recapped their own job description for them in my reply and followed up with a brief explanation of why I was the best fit for what needed to be done. The other thing, and I know this from personal experience of placing my own ads at times, is many people ask for specific subject lines, types of information in the reply, or a certain format for delivery - this is all to often ignored. I've placed ads and had maybe ten out of 100 people actually DO the thing I've requested (it certainly narrowed down the field!

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But, these things are all true no matter which country you live in and which you're marketing to.
If you wanted to expand your market to say, Australia or the States you might find an e publication in that country that offers advert space and see about getting your business advertised in there.
I think Kathie had some great suggestions regarding networking, an extended network of contacts is never a bad thing to have; it just takes some time to develop and requires persistence and patience. LinkedIn in a superb way to participate in social networking but at a purely business level. Many companies use LinkedIn to tap resources they otherwise wouldn't have direct access to by sending out job descriptions in a given network. You can also answer questions there on their boards - another way of getting out there and getting noticed.