Perhaps you should try some spelling variations:
"bi 198ais conference" » "bi 1984 conference" (Expand Search), "bi ais conference" (Expand Search), "bi soas conference" (Expand Search)
"bi hbai conference" » "bi hci conference" (Expand Search), "bi ewci conference" (Expand Search), "bi ais conference" (Expand Search), "bi shuai conference" (Expand Search)
"bi 4 conference" » "bi ds conference" (Expand Search), "bi 1984 conference" (Expand Search), "bi 1st conference" (Expand Search), "big 4 conference" (Expand Search), "bi a conference" (Expand Search), "pi 4 conference" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("bi 4 conference") OR ((("bi 198ais conference") OR ("bi hbai conference"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"bi 4 conference\") OR (((\"bi 198ais conference\") OR (\"bi hbai conference\"))))".
• Removing quotes may allow a broader search: (( bi 4 conference ) OR ((( bi 198ais conference ) OR ( bi hbai conference )))).
• Adding a wildcard symbol may retrieve word variants: (("bi 4 conference") OR ((("bi 198ais conference") OR ("bi hbai conference"))))*.