Searching for Korean language materials in non-Korean Search tools is not the easiest thing to do. You can use Korean to search in the library catalog but some records may not show up as results even though the items are available. One of the reasons is because the bibliographic information is recorded either in Korean or Chinese depending upon the publication. Besides which there are some technical problems yet to be resolved with Korean scripts in the library catalog. That is why you need to be familiar with Romanization to get the most comprehensive results for Korean books.