On the tick list (instructions on how to subscribe at the first link here): Tick Links
it is recommended that you treat aggressively, at 10 mg/kg twice a day for 8 weeks, to help prevent recurrence. It's possible that your dog was under treated, which is usually what happens here in the U.S. When they are not treated aggressively enough, after some time, it turns out they will have a chronic form.
It's important to monitor blood counts, and also liver and kidney values. Liver support is very important. Here, this is a favorite product for liver, and some kidney support, but you will have to look around and see what type of liver support you have available to you: Country Life Liver Support Factors -- 100 Tablets - Vitacost
And yes, joint supplements, glucosamine and chondroitin.
Lyme is chronic. When antibiotics kills the lyme spirochete, it can change into a cyst form, and when antibiotics are stopped, it can then change back, which makes getting rid of Lyme difficult. Anaplasmosis can also be chronic, depends on when in the disease process that you got it.
For Lyme, there are some herbals that folks on the tick list have used, Samento, Banderol, Cumanda, Teasel Root, but there is no definite protocol or dosing.