中国文史资料集粹. This is an e-book collection of over 870,000 titles in Chinese. You can search the full database (click on the Trail button) and see the first 17 pages of any book. If you want the library to buy it, please click on the recommend button.
This can be a very slow site, but it is a good way to find out what has been published in Taiwanese journals. We do not have the full-text so you will need to use Interlibrary Loan to get the articles.