To search for items you want to buy in Douyin Shopping, you can take the following steps.

First, open the Douyin app and go to the "Discover" page.

Then, enter the keywords of the items you want to buy in the search bar, such as "clothes", "shoes", etc.

Next, click the search button to search. Douyin will display videos and products related to the keywords. You can browse the video and product pages to learn about the details and prices of the items. If you find the item you like, you can click the buy button to place an order.

In addition, you can also use the filter function to narrow the search range according to price, brand, style and other conditions to find the items you want to buy faster.