The phrase "and developed a solid" is correct and usable in written English.
It can be used when describing the process of creating or establishing something that is strong or reliable, often in a professional or academic context.
Example: "The team worked diligently on the project and developed a solid foundation for future research."
Alternatives: "and established a strong" or "and built a robust".
"In Nick's preparation for NZ with myself and Dr Ken Jennings in Johannesburg during early February, we 'unpacked' his Indian tour experience and highlighted how... he overcame some unique challenges as an opening batsman on his first tour and developed a solid partnership with a new captain and opening partner.
Fortunately, many cities have embraced this and developed a solid, useful web presence.
As shown in Figure 8B, at day 14 post-injection, the R2-T1AS/G2B-10A mixed tumors had filled the cyst and developed a solid structure, resulting in tumors larger than the R2-T1AS-only tumors.
But Young was able to empty his bench against Louisiana-Lafayette and Arizona and develop a solid rotation among his front seven.
OUTLOOK -- This will be the second year of rebuilding for the team that set the standards on and off the field by playing in the first four championship games of the league's existence and developing a solid fan base.
The course helps small business owners to build a three-year strategic growth plan, understand financials and develop a solid marketing campaign.
Cloud computing services are only going to increase in number, and developing a solid cloud-based integration strategy at the start makes it easier to add additional services and boost return quickly and efficiently.
(Listen to excerpt from chapter one by clicking this link). This strategy season, push to be a more active participant in the strategic planning processes of the other functional units and business units, and develop a solid IT strategy that provides an idea of IT's major objectives for the foreseeable future.
It is important not only to be able to talk to multiple domain experts, and develop a solid hard-core analytical mind frame to cast problems, but also to have access to a rich set of paradigms about how to deal with complexity".
Then, figuring out our supply chain and developing a solid brand identity were the most exciting accomplishments of 2015.
Committing to your own daily practice consistently and developing a solid relationship with a teacher who can support, guide, and supervise your work are vital.
