Search for an exact match by putting an exclamation mark first, e.g. "!silane" will match only silane and not methyl silane. Spaces separating words are interpreted as logical AND, e.g. "methyl silane" searches for all names containing "methyl" AND "silane". "!methyl silane" will do an exact match on "methyl silane". Only letters, numbers, dash, comma, exclamation mark and space are allowed symbols for security reasons.