Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"don chuc can snippets" » "cong chuc can snippets", "dinh chuc can snippets", "don thuoc can snippets", "don chuc van snippets", "don thuc can snippets", "don chuc nang 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: (((("dung java java snippets") or ("don chuc can snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("don chuc can snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( don chuc can snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("don chuc can snippets"))) or ("locating bug code snippets"))*.