Perhaps you should try some spelling variations:
sanitation activities » sanitation facilities, sanitation utilities, education activities
gender sanitation » gender variation, gender sensitization, gender innovation
3.1 development » 2 development
technologies 2 » technologies _, technologies 4
activities 3.1 » activities 2.1, activities 3.2, activities 3.4
development co » development case, development china
information a » information age, information about
co africa » can africa, do african, 1 africa
a 2.2 » _ 2.2, a 3.2, a 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information a 2.2 gender sanitation activities 3.1 development co africa.*.