Looking on the internet deeply has found these results:

how long you have been using this is the most popular phrase on the web.

I would spend much time 10 results on the web	how long you have been using this 1188 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	... face clearly; The Olay Total Effects product that you are currently using; How long you have been using this product and how it has helped your skin over time. Please briefly describe the setup and how long you have been using this type of caching in a production environment. 2. Have you encountered any major ... How long you have been using this product and how it has helped your skin over time. ENTRY GUIDELINES: a. Only one entry per person. Multiple entries by ... How many hours do you use it and for how long you have been using this (I mean months, years), sorry for asking too much about this, I am just kind of concern.

I would spend much time

10 results on the web

how long you have been using this

1188 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

... face clearly; The Olay Total Effects product that you are currently using; How long you have been using this product and how it has helped your skin over time.
Please briefly describe the setup and how long you have been using this type of caching in a production environment. 2. Have you encountered any major ...
How long you have been using this product and how it has helped your skin over time. ENTRY GUIDELINES: a. Only one entry per person. Multiple entries by ...
How many hours do you use it and for how long you have been using this (I mean months, years), sorry for asking too much about this, I am just kind of concern.