For working with server you need to add "https://www.google.com/finance" to the list of the allowed URLs (Main menu->Tools->Options, "Expert Advisors" tab):
Fig. 2. Realtime World Stock Indices from Google Finance
The Acceleration/Deceleration Indicator (AC) measures acceleration and deceleration of the current driving force.Average Directional Movement Index (ADX)
The Average Directional Movement Index Indicator (ADX) helps to determine if there is a price trend.