The phrase 'many modification' is correct and usable in written English.
You can use it to describe an extensive degree of changes or adjustments. For example, "The software underwent many modification before it was ready for release."
When the paperwork was eventually reviewed, many modification seekers did not qualify for permanent status, either because their debt load was not heavy enough, they did not live in the house, their documents were incomplete or they simply failed to make the trial payments.
XS and TL gave many modification suggestion about the paper.
In order to enhance the visible light driven photocatalytic performance of BOC, many modification strategies have been developed.
To extend its photo response to the visible region and to promote the photoelectric conversion efficiency, many modification methods have been applied (e.g., dye sensitization, metal ion/nonmetal atom doping, semiconductor coupling, and noble metal deposition) [19, 66].
Many modification have been canceled while still in the preliminary stages, and according to SIGTARP estimates, HAMP is now only on track to help about 800,000 homeowners.
Many modifications of the toes occur in lizards.
This structure, despite many modifications, has survived until modern times.
A clean look also draws less attention from the police, since many modifications are illegal.
After the Han period (206 bc ad 220), the standard coin underwent many modifications.
The many modifications to the characters and the show, particularly the importance placed on portraying dance accurately, presented challenges for SD Entertainment, the company producing the animation.
The fourth painting, created in 1610-14, clearly takes the third as a model, but its many modifications indicate an artist continually rethinking even his most familiar compositions.
