.withCondition("KeywordMatchType = 'Exact'")
.withCondition("Text DOES_NOT_CONTAIN ['review']")
.get();
You can also use DOES_NOT_CONTAIN_IGNORE_CASE if you want to also filter out keywords containing REVIEW, Review, etc.
FYI, you don't need to specify a date range in this case since you are not filtering on stats (e.g. Clicks, Cost, etc.) at all. Also, I think you want to use "KeywordMatchType" instead of just "MatchType".
Cheers,
Alex