"bolstering cooperation" is a correct and usable phrase in written English.
You can use it to refer to the process of strengthening or improving cooperation. For example: The two countries have recently taken steps to bolster cooperation in the areas of trade and defense.
Aware of such concerns, Attorney General John Ashcroft began a four-nation tour of Europe today to bolster cooperation and reassure Washington's allies.
Mr. Collins also encouraged colleagues in the State House not to attend the annual Princeton legislative forum, designed to bolster cooperation and learning between the university and Legislature, said Pamela Hersh, who organized the event and serves as Princeton's director of state and community affairs.
The EC's intent here is also to bolster cooperation between tech firms, trusted flaggers (aka third party specialist organization that help platforms with identifying problem content) and law enforcement authorities.
Venezuela and China agreed to bolster cooperation on oil, with plans to build jointly two refineries and to double a joint strategic investment fund to $12 billion, Chavez told reporters in Beijing during his two-day China visit, which ends Wednesday.
In 2003, France and the UK signed a bilateral treaty in the northern French coastal resort town of Le Touquet to bolster cooperation between the two countries' police forces at the border.
Here, special schools act as resources to help the inclusion of children in mainstream schools, bolster cooperation between special and mainstream schools to prepare children for mainstream schools, and support those children them once they get there.
The tragic terrorist attacks in America last September highlighted the need for European Union Member States and our international partners to bolster cooperation to defeat the evils of international terrorism.
In the NATO-Russia meeting, President Medvedev said that Russia was "bolstering our cooperation" with NATO to "develop a strategic partnership".
The talks, which were held in a highly positive and important atmosphere, discussed bolstering mutual cooperation in all fields as to enable the people of the two countries to smooth over the difficulties posed by the unjust unilateral sanctions that are aimed to break their will and subjugate them to serve Western and Israeli interests.
In the 1990s U.S. companies cut costs, jettisoned marginal efforts, bolstered internal cooperation and formed strategic alliances.
