[Koha] 2 problems - refine your search - results increase 1

hi i have 2 problems i'm using koha 3.8 on ubuntu 12 first , i have a problem in refine your search in non English language , every click in refine your search in ( not english words ) Latin or arabic languages didn't show any results and show strange characters in browser tab,English language working very good in refine your search , and other language indexing excellent in koha , any help second, in all results i see the really results plus one ( +1 ) not really result , in other mean the results increase 1 on the list , for example , results 1 - 2 - 3 - 5 no. four not here and calculated in result list thank you