Set Chrome browser to search your bookmarks
Go to Tools > Options > Basic > Default Search Manage. Under Other search engines there will be an entry where you can define a search. For the Add a new search engine field enter Chrome Bookmarks. For the Keyword field enter b. For the URL with %s in place of the query enter chrome://bookmarks/?#q=%s.
If you Google Search or something else is your default search provider, you can type b something and it will search your bookmarks for something instead of Google.
References
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