Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dang quang che snippets" » "dang quang code snippets", "dung quang che snippets", "nang quan che snippets", "dang hung che snippets", "dang quan che snippets", "dang quang chi snippets", "dang quang chan 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: (((("dang quang che snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang quang che snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dang quang che snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang quang che snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.