TextMaker documents can be exported to PDF in the original tool and the same most likely goes for template (.tmv). But it would make sense that only templates that are like predefined forms are exported, empty templates without any data would just produce blank page.
Convert TextMaker document template to Adobe Portable document format.
We have found one software suitable in our database for this conversion.
Microsoft Windows software - convert tmv to pdf on Windows
A reliable word processor from SoftMaker Office suite
Convert from tmv file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.