Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"trong dan den snippets" » "trong dan code snippets", "trong dang den snippets", "trong san den snippets", "trong tan den snippets", "trong ban den snippets", "trong van den snippets", "trong dan dung snippets"
"dung java java snippets" » "dung va java snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("trong dan den snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong dan den snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( trong dan den snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong dan den snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.