Yup, just like you, I only had one charm for along time and so was basically swimming in charm candy, t-shirts and tree sap... without any charms. It was frustrating. The only way to increase your odds is to buy more real charms, I'm afraid. Think ab...
Try fancifulsinc.com. They have thousands of charms, including dogs, but I can't remember specifically if they have pugs.
well they aren't real but what i think is that they are not trying to sell the real webkinz charms but yet charms that THEY have made for your webkinz. so if you are looking for the charms that ganz makes then dont buy from there.