The phrase "knowhow of" is correct and usable in written English.
You can use it when you want to refer to someone or something having a specific expertise or skill. For example, "The professor is well-versed in the knowhow of computer programming."
Fleming imbued his westerns with the knowhow of a native Californian.
The knowhow of Petr Cech, Per Mertesacker, Sánchez and Özil, who have all won major honours, will be leaned on.
Overton, at 19, lacks the knowhow of Magoffin and Kirby but has the genuine pace to stamp him an international prospect.
The estimated $30 billion deal is likely to boost the technological knowhow of the combined company.
The secret to Shanghai Tang's successful turnaround was balancing the "knowhow of the West" with the "culture of the East", says Mr le Masne de Chermont.
"We are 100% sure we can deliver, because the knowhow of how you take one cell and combine thousands of them together has already been done by Tesla.
A primary concern in designing these systems is a lack of technical knowhow on the influence of buoyancy and therefore body force on two-phase heat transfer in reduced gravity.
Even though, most of the respondents have knowhow on the importance of knowledge and experience sharing, only 152 (49.0%) of them actually shared their knowledge and experiences to their colleagues.
The city and the refugee camps of Balata and Askar constituted the center of "knowhow" for the production and operation of the rockets in the West Bank.
As Bruns et al. [7] explained, this is the result of a combination of administrative problems, complicated licensing procedures, authorities lacking capacities and knowhow, problems of coordination between different administrative levels, and diverging interests of the federal government and the concerned regional authorities.
The experiences gained through the interdisciplinary joint R&D activities clearly showed that even in the case of availability of appropriate technologies, a comprising transfer of knowhow and the buildup of capabilities (Capacity Development) is inevitable to sustainably implement and disseminate new methods.
