Please stop editing pages just to remove/add spaces. These edits are unsubstantial and if anything, make the readability of the source code difficult for no reason. It also clutters the page histories.
Don't worry, you didn't break the pages. Unfortunately, I don't think your intended changes were applied as none of your edits added a new language link. They just added/removed spaces. Next time you edit please make sure to use the see changes and preview options before saving to ensure the intended changes are being made.
After taking a look at the Vietnamese Wiki, I understand what you were doing and I'm exceptionally glad that you take the time to translate pages here on the wiki to there.
One thing that could be done to benefit both wikis is adding the language link at the bottom of whichever page you translate. I've already done this for Fancy Spiralled Tubers by adding vi:Khoai Tây Xiên at the bottom on the page in source mode. Doing this links the English and Vietnamese wikis, so Vietnamese users who find themselves on the English wiki have quick and easy access to the wiki in their language.