Perhaps you should try some spelling variations:
"computer example. in life sciences" » "computer examples. in life sciences", "computed example. in life sciences", "computed examples. in life sciences"
"computer apple. in life sciences" » "computers applied. in life sciences", "computer simple. in life sciences", "computer people. in life sciences", "computer appe. in life sciences", "computer appse. in life sciences"
"computer apple. in fire science" » "computers applied. in fire science", "computer simple. in fire science", "computer people. in fire science", "computer apple. in file science", "computer apple. in five science", "computer apple. in firm science", "computer appe. in fire science", "computer appse. in fire science"
"computer appl. in fire science" » "computer appl. in file science", "computer appl. in five science", "computer appl. in firm science", "computer app. in fire science", "computer apps. in fire science"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (((("computer apple. in life sciences") OR ("computer example. in life sciences"))) OR ((("computer apple. in fire science") OR ("computer appl. in fire science")))).
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