Multiple partial text search filter in pivot table

[witsonjoyet]

Hi all,
I have a airline catering complaints data which has pnr number, flight details, feed back .. so i have arranged the data as Pivot Table as tabular form and taken feedback as rows so now the question is how to search multiple partial text in feedback section?

For ex some of the travellers mention in their feed back as "Food is not tasty" , others mention as "Meal is not good".. so i have some 7 or 8 different words(like "meal, food, FOD, maintenance etc...) need to search in pivot table which i cannot figure out in pivot table..

Could any one help me how to search multiple partial text search in pivot table..