Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong san can snippets" » "cong san can snippets", "dong bang can snippets", "dong von can snippets", "dong san van snippets", "dong ban can snippets", "dong san chang snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("dong san can snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong san can snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong san can snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong san can snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.