LangBox: For searching sentence examples by one or more words

I've launched LangBox, a sentence search engine for multiple languages including English, Chinese, Spanish, French, Russian and Portuguese. LangBox is used for finding sentences by one word or several words, to understand how to use these words in one sentence. When I was writing articles, I often had no idea of the best way to use a word, or how to use two words together, in a foreign language even in my mother language. What if there were many sentence examples I could get? And then, Langbox was created. It has indexed many articles from wikipedia and news articles by professional journalists. You can search with one or more words to find out how the experts use the words. Yes, It's helpful, please give a try.