Keep working through the Jumble Adventure map of your choice until you have been awarded 100 stars for your effort.
You obtain a star for doing one of the following in a level or bonus level-
1. Unlocking all the blue words
2. Unlocking all the purple words
3. Unlocking the three words with keys attached, and then completing the bonus jumble
Each level can have a different number of letters, and each level can have a different number of blue and purple words. The master box of the common words is ordered by number of letters, and then by alphabetical order. Knowing this can help you have a clear idea of the first letter of any words you may be missing.
If you having trouble on any of the levels, you are allowed to go to the next one after obtaining at least one of the stars. You can also use a hint if you get stuck, and there is no penalty for doing so.
Another option is to use a word solver site,
http://www.wordfind.com/ is my personal favorite, but it does not list any hyphenated words (XXXX-XXX) such as
full-time or
low-budget.