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