"articulate more" is correct and can be used in written English.
You could use it when asking someone to explain something in more detail or to express their thoughts better. For example, "Can you articulate more about your views on the current political situation?".
Equally, bashing Wal-Mart helps to articulate more general fears about globalisation.
This stifled debate means we have missed the opportunity to articulate more clearly the huge benefits to our economy, our culture and the evolving nature of our Britishness that migration brings.
Smith's comments on Sky News came just hours after ratings agency Fitch said that the UK – along with France and Spain – needed to "articulate more credible and stronger fiscal consolidation during the course of 2010 to underpin confidence in the sustainability of public finances".
In recent months, I have asked many American diplomatic and military officials to define a coherent long-term strategy for the region, but none of them have been able to articulate more than a vague wish: that by improving local governments and institutions, encouraging democratic tendencies, and facilitating development, the international community can defeat terrorism.
Landscape professionals can use these results to articulate more nuanced arguments regarding access to natural environments for restoration purposes.
These findings suggest that the party information helped the respondents to articulate more consistent preferences than in the treatment without the party information.
Unlike indecent terminology in most languages, mat is multilevelled, multifunctional, and extensively articulated––more a philosophy than a language.
"Unlike indecent terminology in most languages, mat is multi-levelled, multifunctional, and extensively articulated – more a philosophy than a language".
"I should have articulated more clearly what the boundaries were and fired him when he didn't respect them," she said.
Part of the challenge is akin to what Philip Roth articulated, more than fifty years ago, in his essay "Writing American Fiction".
To the degree that he has separated himself from the Democratic Party, he's done it mainly by articulating more outspoken versions of the standard liberal view on climate change, gun control, immigration reform, and gay marriage.
