This means that you'll be able to search for NAICS codes directly (if that's your jam). We'll do the math; let's make better data on public procurement together.
Possible NAICS Codes
238990 – All Other Specialty Trade Contractors
541690 – Other Scientific and Technical Consulting Services
541990 – All Other Professional, Scientific, and Technical Services
541910 – Marketing Research and Public Opinion Polling
541620 – Environmental Consulting Services