Veronika's suggestion is best for your scenario where all items can be split and displayed as a tree.
Another option is adding html line breaks <br> to the file before uploading. This is more manual and would only make sense if splitting could not be done... like the 2nd scenario below.
Here's an example relevant to your scenario.

Here's a scenario where splitting would not work, but using line break improves readability.
#CostingStandard(CT-Foundation)