Disambiguation can be a tricky issue across all languages, and it can affect the results of your analysis.
There's a workaround that helps to solve it in Explorer manually. You can replace the ambiguous term with more specific multi word expressions (n-grams) that have a more specific meaning and putting these in separate topics that represent those different meanings.
Let's say you have two topics:
1) "live in a house"
2) "live streaming concert"
Both have "live" as green term.
1) "Live in a house"
Add "live in" by writing it manually, and delete "live" from terms. Then, by clicking on ? button, choose between suggestions that have suitable context, like "he lives alone" and add them as well.
2) "Live streaming concert"
Add "was live" by writing it manually, and delete "live" from terms. Then, by clicking on ? button, choose between suggestions that have suitable context, like "live transmission", "live streaming" and add them as well.
Get more suggestions by clicking the "More" button and repeat. Don't forget to click Explore to save everything when you are finished.
By doing this, you can replace the single term (that has double meaning and leads to mixing up topics) with more accurate terms which match with the right texts.