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