[General] The meaning of "do more harm than good"

[Shamsiyan]

I want to know what are the meanings of "done more harm than good" and "than good" in the following sentence (I consulted the dictionary but there was not a clear meaning):

The campaign may have done more harm than good.

 

[Chicken Sandwich]

do more harm than good (= used to say that something had a bad effect rather than a good one ) I followed his advice but it did more harm than good.

Source: Longman Dictionary of Contemporary English

 

[tzfujimino]

I want to know what are the meanings of "done more harm than good" and "than good" in the following sentence (I consulted the dictionary but there was not a clear meaning):

The campaign may have done more harm than good.

Hello, Shamsiyan.:-D
(In addition to CS's explanation,)
The word 'good' (as well as 'harm') in your sentence is used as a noun, not an adjective.
Merriam-Webster's Learner's Dictionary (Please click on 2) good (noun))
I hope the link will shed more light on your query.