Use keywords which describe your topic since some keywords are also subject headings e.g. child abuse
When viewing the full item record of a BBC Report look for the tags “dc.subject.lcsh” to see other subject terms used to describe the topic. Use the heading in a new search to get more results.
Library of Congress Subject Headings:
May be expressed as one word (Abortion) or a phrase (Adult child sexual abuse victims)
Appear in plural form e.g. Politicians not Politician
Are inverted to highlight the more important word e.g. Actors, Black ; Art, Abstract
Do not use slang, highly specific vocabulary, or jargon e.g. Liming (hanging out), horning (infidelity); Neoplasms. Prefer Socializing, Adultery, and tumors respectively.
Enclose terms in parentheses to:
(i) indicate level of difficulty, e.g. Mathematics -- Study and teaching (Secondary), Mathematics -- Study and teaching (Graduate) ;
(ii) differentiate the heading by discipline e.g. Calypso (Music), Calypso (Greek mythology), Calypso (Game)
(iii) specify place e.g. Trinidad (Uruguay), Trinidad (Sancti Spíitus, Cuba)
Are sometimes subdivided to emphasize a more specific aspect of a broad term e.g. Prime ministers -- Corrupt practices. This heading may be further subdivided by place and time e.g. Prime ministers -- Corrupt practices -- Trinidad and Tobago - - 20th Century (note each subdivision is separated by two dashes)