If you want to get better results that you wanted to get than you must use google search engine. And it has a special algorithm that yahoo hasn't. If our keyword is mismatch then google shows a right keyword.
i don't know its just some sites surpass others and i guess Google is just unspoken better than yahoo.i like Google for search,but i like using yahoo for my mail.
I use google first for searching and may use Yahoo on the rare occasions Google does not provide the information i need, however I much prefer to use Yahoo for mail.
Both are good, but google gets searched way more than yahoo. With that said however, you do want to optimize your site for yahoo's crawlers because yahoo still gets a lot of hits!
Google is the most popular and the best search engine.. I cant imagine searching the internet without Google!
I use google and yahoo alternately. If am not somehow contented with the given result then I would head on the other. Both are doing great for me so I can't complain.
The question itself has the answer. Of course Google is more reliable than yahoo. Google can deliver more relevant search results for our queries than yahoo. That is the reason by most of the people love to use Google.