Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong von cua snippets" » "dung von cua snippets", "dong co cua snippets", "dong hoc cua snippets", "dong vong cua snippets", "dong vuon cua snippets", "dong con cua 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 von cua 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 von cua snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong von cua snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong von cua snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.