There may be several reasons why you can't search for plant protection drones on Taobao:

Inaccurate search keywords: When searching for products on Taobao, the choice of keywords is very important. If the keywords are not accurate or too broad, it may result in inaccurate search results. You can try to search using more specific keywords, such as "plant protection drones", "agricultural drones", etc.

Product classification issues: Taobao's product classification is very detailed. If the plant protection drone is not correctly classified, it may also result in failure to search. You can try to find plant protection drones in Taobao's product classification, or use Taobao's search function and enter "plant protection drones" to search.

Seller settings: Some sellers may set parameters such as price and sales volume of the product, resulting in some search results being excluded. You can try to adjust the search parameters, or contact the seller directly to inquire whether there is still inventory or whether it has been removed from the shelves.

Few products: Plant protection drones are a relatively new product and may not have entered the market in large quantities, so there are fewer products on Taobao. You can try to search for the product on multiple platforms, or pay attention to news and information in related industries to learn more about agricultural drones.

In short, if you can't find agricultural drones on Taobao, you can try to use more accurate keywords, adjust search parameters, contact sellers, or pay attention to news and information in related industries to solve the problem.