Currently, there is no function to directly modify Douyin's search keywords. Because Douyin's search keywords are automatically generated by its system based on user search behavior and content recommendation algorithms, they cannot be manually intervened or modified. However, if you want to improve your own or your brand's search ranking, you can strengthen your activities and content quality, increase interaction and attention, improve user reputation and exposure, and thus improve search engine optimization effects. At the same time, you can also use some keyword analysis tools to understand user search habits and content demands, so as to optimize your keyword and tag planning and improve matching and click-through rates.