'further higher' is not a grammatically correct phrase.
Instead, you should use 'further' or 'higher' depending on the context. For example: "He studied further and achieved higher grades."
Further, higher, faster – there was a time when the sky was not the limit.
"I'm hoping to be able to fly faster, further, higher with a greater degree of control.
As bonds have continued to sell-off, yields have pushed further higher.
Further, higher mode excitement will enable operation at higher harmonic frequencies.
Graph #2 shows that achieving further higher thermal energy efficiency barely increases the total exergy efficiency.
Further, higher be the operating temperature more is the efficiency of system.
However, at further higher temperature, e.g., 100 °C, the sorption capacity decreases due to the dominant desorption.
Further higher order measures, some specific Minkowski functionals, are investigated regarding their applicability and efficiency in the optimization process.
Further, higher accuracy was associated positively with purchase intention, and corresponded with greater ease and speed of judgment formation.
Further, higher concentration of rigid cross-linker or lower concentration of flexible cross-linker enhanced the thermal stability.
Further, higher 1-alcohols, 2-methyl 1-alcohols, methyl esters, n-paraffins, CO2 and H2O were formed.
