Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"vung bao can snippets" » "van bao can snippets", "vung dat can snippets", "vung va can snippets", "vung bao cao snippets", "vung ban can snippets", "vung bat can 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: (((("vung bao 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: (((("vung bao can snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vung bao can snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vung bao can snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.