Find a variety of information to learn about a topic

Data or statistics -- What is the trend?

Useful data or statistics can provide: A check for bias and interpretations A check for trends Insight into what data is or isn't being collected

image citation: Data Analytics: making decisions in an uncertain world, 2022. Available at https://mbainternationalbusiness.net/2022/06/data-analytics-making-decisions-in-an-uncertain-world/

Data and statistics can check our assumptions by providing proof of a trend. Is it really declining or on the rise? Data and statistics are often used to backup a statement along with other kinds of evidence in order to corroborate a claim. Data can also provide insight into what is or isn’t being collected or examined -- in other words, not every topic or question has a clear data point.

Relevant data and statistics can provide clear evidence in support of a claim, and appeal to the reader's /audience's logic when considering your ideas -- so it adds to the the writer's/speaker’s LOGOS.

Add site:edu or site:gov to limit your search to .edu or .gov sites
Limiting your search to the areas of the web where the information is most reliable, such as education sites or government sites is a good way to find credible sources. 

For example, a search for nutritional supplements, will bring up many commercial (.com) sites trying to sell you vitamins. If you search for nutritional supplements site:gov , the top results (except for the sponsored ads) will be sites such as the National Institute of Health and the Food and Drug Administration, which are authoritative, unbiased sources that are not trying to sell you anything.
If you search for nutritional supplements site:edu, your top results will be from universities providing research on nutritional supplements.

Add research OR study OR data OR statistics OR trends to ask Google to find any of those words in a search.

Use a minus sign to exclude words.

For example, if you are looking for weather information in Portland, Maine you could add -oregon to your search to exclude web sites with the word "oregon."
Or to exclude commercial web sites, add -site:com to your search. For example, nutritional supplements -site:com