It is in 4.7, just not as a Suggestion Box.
The Topics List is a fixed list so when typing it will scroll to the nearest hit.
The way it works is it will search the beginning of each topic for the string entered in the Topics Entry. If there are no hits it will search within each topic for a hit.
For instance, with the Dictionary of Bible Themes and the new Exhaustive Library of Bible People, the topics are prefixed with a number like "994-David." If one types "david" in the entry, "994-David" will be selected in the list.
In the case where the entered string may be in an undesired entry, simply put a dash before the string, like "-david."
Developer, Bible Analyzer
But to him that worketh not, but believeth on him that justifieth the ungodly, his faith is counted for righteousness. (Rom 4:5 AV)