Search bar inconsistencies are confusing

when searching for a term, i was confused as to why i had to select results from the dropdown preview of the search bar.
it wasn't until today when Tom told me about "browse all" being a button, and that clicking that is how i get the full list returned for review. this seems inconsistent though. here's my steps:

1. type "nerve" in search bar
2. hit enter
3. 0 results returned for nerve
4. return to search bar.
5. click in search bar, see there's lot of options for nerve. (see screenshot)
6. how do i get those options?
7. use right arrow to remove highlighting from "nerve". click enter
8. get first(?) search result for "nerve"
9. return to search bar, click in to see the helper window. click "browse all"
10. still get 0 results.

Desired Action:

1. want to be able to see a list of terms that fit my search criteria with as few clicks as possible. I cannot use the "helper dropdown" reliably, because many terms names are similar - you need to be able to see the definition at a minimum (& then, i usually look to see if it is present in uberon) in order to evaluate which one is appropriate.
2. I want to be able to get the preview results to populate the search result page reliably.
3. browse all doesn't look like a button, or that it should have a function. All other items that have actions have highlighting on hover.
4. I don't understand the "browse all" function, and what the usecase is to not use it?

まず、プレビューオプションと「browse all」アクションを含め、検索バーの番号付き手順を再現します。プレビューの選択と Browse all によって検索結果ページがどのように表示されるかを追跡します。用語、定義、関連する Uberon 情報を、明確なインタラクションフィードバックとともに確実に確認できれば完了です。