diff --git a/search-engines/Ranking Relevance in Yahoo Search.pdf b/search-engines/Ranking Relevance in Yahoo Search.pdf new file mode 100644 index 0000000..708504d Binary files /dev/null and b/search-engines/Ranking Relevance in Yahoo Search.pdf differ diff --git a/search-engines/The Anatomy of a Large-Scale HypertextualWeb Search Engine.pdf b/search-engines/The Anatomy of a Large-Scale HypertextualWeb Search Engine.pdf new file mode 100644 index 0000000..b3d0b5f Binary files /dev/null and b/search-engines/The Anatomy of a Large-Scale HypertextualWeb Search Engine.pdf differ diff --git a/search-engines/Web-Scale Responsive Visual Search at Bing.pdf b/search-engines/Web-Scale Responsive Visual Search at Bing.pdf new file mode 100644 index 0000000..c347265 Binary files /dev/null and b/search-engines/Web-Scale Responsive Visual Search at Bing.pdf differ