"cannot clearly see" is correct and usable in written English.
You can use it whenever you want to describe that something isn't visible or understandable. For example, "I cannot clearly see what you mean by that."
It is easy to get used to seeing things in the same way, and as a result we often cannot clearly see why change is happening.
Never limit yourself with how you brought up, your traditions, education, beliefs… These things can constrain you and you may analyze the affects of your problems wrong or you may limit your needs so you cannot clearly see the affects of your problems.
(C) The arrangement of LRPs along the central cylinder cannot clearly seen in normal conditions.
The internal structure cannot be clearly seen due to the larger particle size of the microspheres, which cannot be broken down by electron beam from transmission electron microscopy [18].
The costs of Mr Obama's humility, unlike those of George W. Bush's hubris, cannot be clearly seen; lost opportunities are hard to measure.
The clearly identified displacement boundary terminates around the position of 124.13°E, 10.01°N, and large ground movement cannot be clearly seen farther northeast (line 4 in Figure 4a).
This is because the original image has an excessive contrast such that details in the shadow and highlight areas cannot be clearly seen.
On the other hand, heat transfer enhancement of nanoparticles on h cannot be clearly seen, as shown in Figure 6b; there is only a 5%to15%5% increase for Ag nanofluids for some q″ while the CHF does not.
Recently, using long-term ionospheric conductivity and geomagnetic field data obtained at low-latitude stations, Takeda ([2013]) showed that solar activity effects cannot be clearly seen in the thermospheric neutral winds, which are derived from the Sq amplitude calculated from the Y component of the geomagnetic field.
While the image cannot be clearly seen on the VHS version of the film, it appeared more clearly on the film's laserdisc.
