If you want to use it, you need to download dictionaries and turn on spell checking.
This article is about how to enable spell checking in AndrOpen Office.
1. Download dictionaries from OpenOffice site
First, AndrOpen Office doesn't have dictionaries for spell checking, so you need to download dictionaries of your own language.
You can get the dictionaries as a OpenOffice extension from Apache OpenOffice Extensions (http://extensions.openoffice.org/) site.
You can go to site by "Get more dictionaries ..." menu in "More Information" screen.
2. Import the extension
If you download the dictionary extension, you can get the extension as oxt file.
Launch the oxt file from AndrOpen Office.
So you can import dictionary as extension.