As updated, these inappropriate words/terms has been somehow (spammed) embedded your site "https://in.indeed.com/" and searches has been performed by these inappropriate words/terms and as such these pages with these inappropriate words/terms has been indexed and serving in the results. Same thing is observed when you perform search in Google.com with "video site:in.indeed.com" without quotes.
Currently, we cannot do much about it as that is how Google indexes the web content. Since your contents are not adult content and that is the reason the "Safe Search" filter is not of much effect. But, the concern team is already working to fix such scenarios and improve filtering and ranking algorithm.
You can consider to enter the results urls with the inappropriate words into the "Sites to exclude" configuration in your PSE engine control panel. So that these urls with the inappropriate words will not be displayed in your results.