"further usage" is correct and usable in written English.
You can use it to refer to more use of something. For example, "I am researching further usage of this product."
Thereafter, the thick slurry was kept at -20 °C for further usage.
Finally, the lemma and the part-of-speech (POS) information were obtained for a further usage in the feature extraction phase.
Any further usage is charged at 1p a minute.
Later, continued siltation hindered further usage.
In 1981 Brookes launched an unsuccessful legal action aimed at preventing further usage of the pictures.
Further usage of pawpaw peels for biofuels generation is advocated.
Further usage of peanut hull for biofuels is encouraged.
Their success led to further usage during World War I and continues to this day.
There is also a discussion about further usage and implementation of this method in designing a complex system or interface.
The use of non-standard, customized nozzle designs and print materials is discussed for further usage capabilities.
All expressions of the thermoelastic field in the full space are obtained in terms of elementary functions, which can facilitate their further usage.
