"extensive discourse" is a correct and usable phrase in written English.
It refers to a lengthy or detailed conversation or discussion about a particular topic. Example: The professor engaged the students in an extensive discourse on the history of the English language.
In the poem, da Gama recites the history of Portugal by way of an extensive interior discourse.
Though this may seem a lengthy process, joint efforts to restore ecological systems can prove to be the entry point to extensive political discourse.
For instance, the link between trade and predictability of exchange rate had been the subject of an extensive policy discourse over several decades.
Open to extensive debate, the discourse swung between diverse ends of the ideological spectrum in a lively manner, with lectures delivered by a host of expert Indian academics and policy-makers.
There is an extensive and diverse discourse on the need for 'evidence-based' policy and commissioning.
She describes MAP's formation as deriving from "a grass roots outreach to local farmers, extensive regional exploration and community discourse" which lead to the identification of 11 regional zones in Mendocino County.
Findings from this critical discourse analysis revealed extensive similarities between the discourses identified in the submissions with the direction of the 2009 proposed primary maternity care reform agenda.
Findings from this critical discourse analysis revealed extensive similarities between the discourses identified in the submissions by individual women, consumer groups and other organisations representing women's interests with the direction of the proposed primary maternity care reform agenda.
The discourse within Russia consists of extensive criticism of shortcomings along with some "blue sky" analyses of what might be possible in some imagined future.
