"display leadership" is correct and usable in written English.
You can use it when you want to talk about someone who takes initiative and acts as a leader in a given situation. For example, "John was able to display leadership when his team was facing a difficult challenge."
It is also a chance to display leadership at its finest.
In that speech, Mr. Ruttenberg also criticized top steel industry executives as failing to display leadership in the same direction.
So this is a time for mourning, yes, but it's time for President Obama to display leadership as well as grief.
In a column about Christie's size in The Washington Post, Eugene Robinson noted that the governor "speaks often about the need for officials to display leadership".
Randolph has not been able to get José Reyes to settle down or Carlos Delgado to display leadership or much of his old skills.
On one level, there is a semantic point and of course managers can display leadership features that positively accentuate their abilities and vice versa.
A lion-maned maverick, he displayed leadership rare in a Japanese prime minister.
In his seventh season, Fàbregas displays leadership and know-how that few of Chelsea's senior citizens will ever acquire.
He sold play-fakes well, hit receivers in space, ran effectively without drawing hard contact and displayed leadership skills not normally seen in rookie quarterbacks.
After 9/11, Mr. Bush displayed leadership, moral clarity and decisiveness in sending troops to Afghanistan; today, Africa desperately needs those same qualities.
By displaying leadership: the public sector and larger businesses can both take a lead in helping smaller businesses become more dementia-friendly.
