The SEARCH functions locate one text string within a second text string, and return the number of the starting position of the first text string from the first character of the second text string. For example, to find the position of the letter "z" in the word "kazam", you can use the following function:
=SEARCH("z","kazam")
This function returns 3 because "z" is the third character in the word "kazam."
Read more SEARCH Functions
The TEXT function lets you change the way a number appears by applying formatting to it with format codes. It's useful in situations where you want to display numbers in a more readable format, or you want to combine numbers with text or symbols.
Read more TEXT Function
Removes all spaces from text except for single spaces between words. Use TRIM on text that you have received from another application that may have irregular spacing.
Read more TRIM Function
Substitutes new_text for old_text in a text string. Use SUBSTITUTE when you want to replace specific text in a text string; use REPLACE when you want to replace any text that occurs in a specific location in a text string.
Read more SUBSTITUTE Function