Eg: If you are creating Ad’s related to Lenovo Mobile then you have to create ads for particular product for that category and select the keywords related to that product like Lenovo a600+ price, Buy Lenovo a6000+ etc like this
2.Ad the Negative Keywords.
3.Place the keywords in Description if any chance and add in Title also.
4.Create User friendly Url in Display Url.
5.Maintain the Exact Landing Page.
6.Try Reduce the Page Loading time in website.
7.Try Increase the CTR.(important Point)
8.While creating Ad try insert call to action terms it is use full to CTR.
9.You Should Have to Add the Extensions.
10.Loosen up the themes so keywords are not so niche.
What is the USE of Quality Score?
It is very useful if your ad having high quality score then Actual CPC is automatically decrease for that reason we have to try to increase the quality score .
How to check your Quality Score:
Click The below link in that article you can find the process of quality score checking process.