Hey bro, LSI (Latent Semantic Indexing) keywords are nothing but the variations of your main keyword. Let’s take “Make money online” as your primary main focus keyword here. I’ll share the two easy and free methods to figure this out:
1. Google AdWords Keyword Planner
Go to your Google AdWords account > Keyword Planner
You can enter your keyword here and you’ll find a tab called “Keyword ideas”, you can make a note of that.
2. Searches related to ‘Keyword’
You can Google your keyword and at the bottom, you’ll find this section called “Searches related to”, you can make a note of this as well.
Of course, you’ll get better options when you use premium tools like Ahrefs or SEMrush, you can grab their trial version and check it out.