If you notice that the searches you are performing are coming up with a lot of irrelevant results, please try these ideas to provide a more refined list of results.
Tenders.Net will find keywords in the middle of other words, so certain words will return more results than you were intending. You can fix this by surrounding your keyword with empty spaces.
For example, "GIS" will also pick up on tenders with "reggister" but " GIS " will not.
Instead of searching for "heat" which will also pick up "theatre" you can use the full words "heating,heater".
Some words may be too generic by themselves, but linking them with other relevant words will make sure they remain relevant.
For example, "road" is quite general but "road*work" and "road seal" are not.