How to retrieve this document? What is the answer? On the problem of literature retrieval. Thank you.

1: The written search formula is:

Wip: (K= (gallium nitride +GaN))*(T=MOCVD+R=MOCVD)

CNKI: (keyword = gallium nitride or keyword =GaN) and (title =MOCVD or abstract =MOCVD)

2. The number of records retrieved by (1) guided retrieval is VIP: 72 1, and one of them is entitled "Numerical Simulation of GaN Growth in Radial Triple Flow MOCVD Reactor".

Cnki: 48 articles, one of which is entitled "MOCVD leads the growth of InGaN/GaN MQW purple".

(2) The retrieval formula written by (1) is VIP: 268, and one of them is entitled "Numerical Simulation of Flow Field in Reaction Chamber of GaN—MOCVD System".

CNKI: Five articles, one of which is entitled "Development Status and Industrialization Ideas of GaN-MOCVD Equipment"