4. The method of claim 1 , wherein the searching knowledge information further comprises calculating an expanded search score based on the expanded word vector and the searched at least one vector space, and sorting according to the expanded search score.
4. The method of claim 1 , wherein the searching knowledge information further comprises calculating an expanded search score based on the expanded word vector and the searched at least one vector space, and sorting according to the expanded search score. 5. The method of claim 4 , wherein weighting values are adjusted according to the expanded word vector generated from the provided user query or the linguistic analysis result and the vector space stored in the basic vector space database and the expanded vector space database in calculating the expanded search score.