Cause
The necessary entries (keywords) are missing in the dictionary language in question.
Solution
Select the menu items Utilities > Translation > Edit dictionary. In the Dictionary dialog check the dictionary languages used. If the dictionary language you want is missing from the list in the Management tab, you can install it by using (New). Then select the Edit words tab and select the desired language from the Source language drop-down list. In the Find field, enter the relevant keywords and check whether the right translated texts appear in the dictionary language you want. If not, create or add the missing keywords in the source language and the corresponding translation texts in the dictionary language you want by using (New). Close the Dictionary dialog and translate the texts.
Then start a new check run.