How to start filtering only when the length of querytext is equal to 2

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长发绾君心 2021-01-12 03:09

How can I be able to start filtering only when the querytext\'s length is equal to 2?

I have this code and I do not know how to start filtering only when querytext.l

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一生所求 (楼主)

2021-01-12 04:00

As suggested by @Daiwei, here is what I did: