There is a high level of competition among them

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The specificity of high-frequency requests is, as a rule, significantly lower than that of mid-frequency and low-frequency requests;
about 2/3 of traffic comes from low-frequency queries.

For this reason, you should not dismiss queries with a frequency of 0. In addition to the fact that there may be problems in the results of the data obtained, your target customers Guangdong cell phone number list may also come for such a query.

What role does frequency play in contextual advertising?
The price of an ad depends on the frequency of the request, and at the same time there may be low-quality traffic . In fact, as with SEO promotion, expensive advertising will not allow you to increase sales.

If you use low-frequency and mid-frequency queries, you can get more profit.

To sum it up
The semantic core is the basis for successful website operation and the key to effective promotion. Work on the frequency of queries , analyze duplicates, create negative phrases and words. This way you can achieve good results, but do not forget that this is only one of the tools for successful promotion.