"fail to determine" is a correct and usable phrase in written English.
You can use it when you want to express the idea of being unable to reach, recognize, or establish a certain fact or opinion. For example: "The doctors failed to determine the cause of her illness."
Not only does it fail to determine the future status of Kosovo, but it does not even include an agreed procedure for settling that issue at some future date.
They fail to determine concrete results and decisions about particular cases and issues.
Some destroy the natural sediment structure, others lack a small-scale resolution, and all fail to determine anisotropy.
Nonetheless, these schemes fail to determine a possible path to deliver their packets in real time being therefore not comparable with the presented routing solution.
This paper presents two cases of low-resistivity reservoirs and low-contrast resistivity reservoirs, where conventional logs fail to determine the petrophysical properties of reservoirs, mainly, low-resistivity and low-contrast resistivity reservoirs.
This form of psychological hedonism helpfully allows that some hedonic motivations of ours fail to determine our action, and that some of our hedonically determined actions fail actually to get us pleasure.
Relatively high detection rate in Table 1 indicates that the SWT direction determination method (in combination with upper SWT boundary) works well and fails to determine the correct SWT direction only in a few cases.
(Note that Grünbaum used the fact that the point composition fails to determine a length to support his 'conventionalist' view that a line has no determinate length at all, independent of a standard of measurement).
Yesterday staff performed necropsies on the stingrays and failed to determine a definite cause of death.
