1. A computing device to provide a personalized search library based on continual concept correlation, the computing device comprising: natural language analyzer circuitry to (i) receive event data representing content accessed by a user of a client computing device, wherein an order of the event data represents an order that the user of the client computing device accessed the content and (ii) analyze the event data to extract concepts of the content; and correlation circuitry to (i) correlate the extracted concepts based on the order of the event data to generate a plurality of correlations between the extracted concepts, wherein each correlation is indicative of a relationship between a first extracted concept and a second extracted concept based on the order of the event data, (ii) adjust a weight associated with each extracted concept based on a frequency of the extracted concept occurring in the content to generate an adjusted weight, and (iii) store the correlations, adjusted weights, and extracted concepts in a concept model that identifies the relative correlation between each extracted concept and the adjusted weight associated with each extracted concept.