#USA fast CDN
https://cdnjs.com/

#China fast CDN
http://www.bootcdn.cn/

#other
https://www.jsdelivr.com/

Free Site Search Engines (PHP Scripts)

Sphider - PHP Spider and Search Engine - https://www.sphider.eu/

    Sphider is a PHP search engine script that uses MySQL to store your website's index. It can follow links on your web page to perform full text indexing. It is able to handle both static and dynamic pages, respects the robots.txt protocol, indexes PDF and DOC files as well, allows exclusion of common words, supports AND, OR and phrase searches, gives search suggestions on mistyped queries ("Did you mean..."), context-sensitive auto-completion of search terms, word stemming for English ("run" finds "running", "runs", etc), provides site and search statistics, etc. 
    
TSEP Search Engine Project - http://www.tsep.info/

    TSEP is a PHP site search engine that has been localized to many languages. You are asked not to remove the search engine's copyright notice from your site. You can include files by extensions, exclude directories and files, index by loading the file directly from the disk or by via HTTP, etc. The search engine also supports certain boolean operators (+ for mandatory words, * for wildcard, phrase search, etc). You can also define stopwords, words that will not be indexed on your pages. The search engine maintains a log of searches so that you can get an idea of what your visitors are looking for on your site.