Main concept
common name, scientific name: bladder cancer, bladder neoplasms; sleeping sickness, African trypanosomiasis
Modify that concept: What aspects?
etiology, epidemiology, therap*, treatment, prevention, control, vectors, transmission, diagnosis,
complications, drug therapy, risk factors, biological control, prevalence
Use Boolean Operators to specify how to connect your search words:
and to get results including both terms
or to search either term
not to omit a word from the results
Use an asterisk * to get different word endings: photosynthe* to get photosynthesis, photosynthetic, photosynthesize, etc.)
Use quotation marks around words to have them searched as a phrase: "rumen fermentation"
Try adding different aspects to your main concept, synonyms, broader or more specific terms.
Look at terms used in the title, abstract, and subjects of results that you like for ideas.
What options does the database/search engine give for you to Refine Your Results?
e.g., publication dates, publication types (e.g. scholarly journals), age groups, human/animal, language...