Sorry about the mess on this thread, I am trying to keep all my noise in a single thread on the meta.

 I am asked to show Single examples, when the whole concept cannot be grasped. If you think this is all about ONE item, then you will never grasp the concept.

Do this for yourself, and see. Pretend that your tagging a question (your about to ask).  
Type in `Video`   
do you SEE  **Video-Conferencing**?  NO  
 Do you see Video-Playback? NO  
Do you see Video-Encoding? NO  

Wild assumptions are made that these combined tags will Come up, when a person begins to add a tag, that the correct long combined tag will be displayed, it will not until more of the combo word is typed in.   

What goes go wrong with this?  
The questioners **do not know all the chosen word combos**, a specific set of 6 items are shown.  They can start **guessing** what you called it:  
start adding in another Letter `VideoM` etc  
Video-Meeting  NO  
Video-Teamview NO  
Video-Whiteboard NO  
Video-VNC NO  


What do they pick?  
They pick what shows up, IF that applies  **Out of 6 items**  
They pick the simple term [Video] and Combine when that does not.  
You may have known what They should have typed next, they do not.

This example also shows that the creation of synonyms or thousands more combo-tags would be required, or they will use the Simple ones in combination anyway. That will not change the view of **6 items**.  
More lesser used combo-tags will still not show up in the 6 item view. 

If you have a solution for this ONE example, then you missed the point, I could make 50 examples like this.