[Aricle Marketing] How do I target very similiar keyword variations?

[andyvon]

I am currently in the process of setting up my first article marketing project and while doing some keyword research, the following issue crossed my mind:
How do you handle very similiar keywords that have pretty much identical search volume?

Examples:
abc 2 - abc II
singular - plural
very common abbreviations - original form

Some things I came up with but don't know how effective they would be:
- mixing the variations throughout the article
- splitting the article and take one variation per part
- focusing on one variation and disregarding the others

Any advice would be highly appreciated!

tia,
- Andy