Use the following guidelines to search effectively within a Network or a dataverse:
AND logic within individual fields. That is, if you enter more than one term, the search engine looks for all terms within a single field, such as title or abstract.United Nations report, the results list any studies that include the terms United, Nations, and report within a single metadata field.10 year in a basic search. If a study includes the string 10 millions deaths per year within a metadata field, such as abstract, that study is not included in the search results. A study that contains the string 10 per year within the abstract field is included in the search results.Gary King; Will Lowe, 2003, "10 Million International Dyadic Events", hdl:1902.1/FYXLAWZRIA UNF:3:um06qkr/1tAwpS4roUqAiw== Murray Research Archive [Distributor]
If you type King, 10 Million in the Search field and click Search, you see 0 matches were found in the Results field. If you type 10 in the Search field and click Search, you see something like 1621 matches were found in the Results field. But if you first type King in the Search field and click Search, then type 10 Million in the Search field and click Search again, you see something like 4 matches were found in the Results field.