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