I would suggest using startpage.com for any searches that you don't want easily tracked by third parties. startpage utilizes google to enhance searches so it does a good job, but is also private, see below:

Startpage Protects Your Privacy!

Startpage is powered by Ixquick.
The only search engine that does not record your IP address.
Your privacy is under attack!

Every time you use a regular search engine, your search data is recorded. Major search engines capture your IP address and use tracking cookies to make a record of your search terms, the time of your visit, and the links you choose - then they store that information in a giant database.

Those searches reveal a shocking amount of personal information about you, such as your interests, family circumstances, political leanings, medical conditions, and more. This information is modern-day gold for marketers, government officials, hackers and criminals - all of whom would love to get their hands on your private search data.