Perhaps you should try some spelling variations:
"wireless days eeg sensors" » "wireless data eeg sensors", "wireless ad eeg sensors", "wireless atm eeg sensors", "wireless days deep sensors"
"wireless dry fbg sensors" » "wireless ds fbg sensors", "wireless d2d fbg sensors", "wireless die fbg sensors"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("wireless dry fbg sensors") OR ("wireless days eeg sensors"))*.
• Removing quotes may allow a broader search: (( wireless dry fbg sensors ) or ( wireless days eeg sensors ))*.