If you're trying to hunt down how to say difficult to pronounce words, especially proper nouns, tech blog Digital Inspiration suggests searching YouTube for videos with closed captioning to hear how to pronounce them properly.
If you're searching for the pronunciation of a standard word, you can search Google with the "define:" paramater for a quick definition including a pronunication guide. However, Google doesn't work for proper nouns or non-English words. For that, YouTube can be a great help.
From YouTube, search for any word followed by a comma and cc, for instance, "mordor, cc." This pulls up all the videos with closed captioning. Click the closed captioning button below the video for the transcript, search for the word you want to learn, and click on it to be taken directly the that section of the video. It's a pretty handy trick for learning how to pronounce proper nouns such as city names and celebrities (though you might want to cross-check with a couple of sources — just because a video is transcribed doesn't necessarily mean the original content is correct).
Learn to Pronounce Difficult Words with the help of YouTube [Digital Inspiration]