Consider synonyms (e.g., "life jacket" could be referred to as a "life preserver" or "personal flotation device").
To view all of the results in a database on a topic, not just those with full text access, de-select "my subscription" options.
Focus your search by first identifying a Standards Developing Organization (SDO) that is likely to create standards for your area of interest (e.g., Search for ASTM standards if you are looking for testing standards, search SAE standards if your topic has automotive or aerospace applications).
Use parentheses to search key terms as a phrase, rather than independent keywords (e.g., "life preserver" instead life preserver).