Targeting Idea Service - getting stats for wrong keywords

[mediate...@gmail.com]

Hello!

Setup:

I am working with the AdWords API PHP library. I am currently implementing keyword impression estimation, but I believe that there is a problem with the Targeting Idea Service. Most of my work happens in Latvian, so I will provide the keywords I've been having problems with in Latvian. I am comparing my results with the Keyword Planner found in AdWords tools. I am using Latvia (Id=2428) as my Location parameter and using the default Language parameter (all languages). I am using RequestType::STATS. I am requesting AttributeType::KEYWORD_TEXT and AttributeType::SEARCH_VOLUME.

Result:

When looking up impressions for the keyword "tulkojumi", it returns an entry with text "tulkojumi" and search volume 110000.

When looking up the same keyword in the Keyword Planner, it returns a keyword with text "tulkotājs" and search volume 

Issues:

I believe that the Targeting Idea Service is sometimes returning the correct (provided) keyword, but pairing it with the impressions of a different keyword, thus making it unreliable.

Explanation of issues:

While both words ("tulkojumi" and "tulkotājs") are very similar, there is a big difference in the meaning. The former means "translations" as in the service provided by companies that translate stuff. The latter means "translator". That might not seem like a big deal, but it also is the name of the google translator tool in Latvian, so it also gets all the impressions that would go to "translate" in English, which, as I can imagine, is a lot.

Note:

Adding "tulkotājs" as a negative keyword in the Keyword Planner results in an empty result. I haven't found how to add negative keywords to the Targeting Idea Selector yet.