Sentence:  There is another approach dealing with more ring theoretical objects, i.e. starting from a nice class of algebras, called schematic algebras, it is possible to define a space, a Zariski topology, points, lines etc..., cf. [VOW1], [AZ], [ATV]. then it becomes possible to develop a <WSD>scheme theory</WSD>, completely extending the theory of schemes in classical algebraic geometry. 
Meaning of the word marked with <WSD> tags:  The branch of mathematics that concerns schemes (algebraic varieties equipped with the Zariski topology).