Before conducting a search, choose the option "view all."
The resulting list may be short enough to look over in its entirety.
1) The search engine used in the ROV searches for strings of characters in the volunteer's submission. To maximize your search results, use the singular form of words or the shortest string of characters that will match the largest number of words related to your chosen topic. For instance, a search for "whal" would find submissions with "whale," "whales" and "whaling." A search for "whales" would find only "whales."
2) Search for related terms as volunteers may have used different terminology in their submissions. If you would like a volunteer to present a program about DNA sequencing, search for "DNA," "sequencing," "genetics," and "molecular."