Perhaps you should try some spelling variations:
2016 international » 2017 international, 2019 international, 2018 international
rules theories » les theories, rates theories, rules theorems
tables queries » table queries, tables series, tables querying
rules series » rules queries, les series, sales series

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: 2016 international ((rules series) OR (((rules theories) OR (tables queries)))).
• Adding a wildcard symbol may retrieve word variants: 2016 international ((rules series) or (((rules theories) or (tables queries))))*.