I cannot see anything in your "picture" (maybe my IE is blocking a link or something) so this is a guess. Also I am making the assumption that MS Database is similar to Access.
You say you are trying to cut and paste text into a text field. Do you mean a text field?
In Access a text field is limited in size and even a moderate few paragraphs in Word will not fit. You need to check sizes and, if you can do this in MS Database, change the field type to "memo" which can hold far more info than "text".