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