Check if your spelling is correct, or try removing filters.
Remove quotes around phrases to match each word individually: "blue drop" will match less than blue drop.
You can require or exclude terms using + and -: big +blue drop will require a match on blue while big blue -drop will exclude results that contain drop.
Please contact the Environmental Services Department Customer Service Center by email at trash@sandiego.gov or by phone at 858-694-7000 with any questions.