Bookmakers always use these terms to their advantage - all bookmakers. These rules are only enforced in case of dispute (about withdrawals) and the bookie always wins 
Yeah, and when you look at rules like this: "6.2. If you do not use your account which has deposited funds in it, for 3 months you will receive a notice from us. If you do not use your deposits within 1 month following our notice, we reserve the right to deduct monthly administrative costs from the deposits remaining In your account. The administrative cost is 15% monthly from the deposited funds remaining in your account."
"6.3. We reserve the right to close player accounts that have been inactive for more than 12 months. In case your account has deposited funds after the 12-month inactive period, we reserve the right to use the remaining deposited funds for administrative costs for closing the account."
"9.3. We reserve the right to apply a wagering requirement of at least 5 (five) times the deposit amount if we suspect the user in using our service as a mixer."
"12.2. If you use a Deposit Bonus, no withdrawal of your original deposit will be accepted before you have reached the requirements stipulated under the terms and conditions of the Deposit Bonus."
Well...