(fix): Topic search

api/server.js

src/app/home/home.component.ts

src/app/services/structure-list.service.ts

...-list/components/modal-filter/modal-filter.component.html

...-list/components/modal-filter/modal-filter.component.scss

...st/components/modal-filter/modal-filter.component.spec.ts

...re-list/components/modal-filter/modal-filter.component.ts

...pp/structure-list/components/search/search.component.html

...pp/structure-list/components/search/search.component.scss

...structure-list/components/search/search.component.spec.ts

src/app/structure-list/components/search/search.component.ts

src/app/structure-list/models/filter.model.ts

src/app/structure-list/services/search.service.ts

src/app/structure-list/structure-list.component.html

src/app/structure-list/structure-list.component.scss

src/assets/scss/_buttons.scss

src/assets/scss/_color.scss

src/assets/scss/_icons.scss

src/assets/scss/_typography.scss

src/styles.scss