detect bounding box text or non-text using tesseract

Hi I have 2 questions
Q1 I need a code showing me:

eng <- tesseract("eng")
ara <- tesseract("ara")
whitelist <- "1234567890-.,;:أةؤب ت ث ج ح خ د ذ ر ز س ش ص ض ط ظ ع غ ف ق ك ل م ن ه و ي ا @߀!$%&/()=?+"
text1 <- ocr("E:/OCR Test/Test Bill.jpeg",
             engine = tesseract(language = "ara",
                                options = list(tessedit_char_whitelist = whitelist)))

Please refer to the attached Image below :
how to search for a text extracted from (text1) e.g.: VAT. 30047 ,
and then give me the X1&Y1&X2&Y2 coordinates of word that I want to search it inside text1 (VAT .) ? Then how to know the coordinates of the Number after the word (VAT .) combine it together in 1 or 2 strings After acknowledging the position text then copy it in another storing buffer e.g.: Data frame ?

I have another question if the Image contains 2 languages English & Arabic how I set bot languages in (text1) above?