Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dun sang cho snippets" » "dun nang cho snippets", "duy sang cho snippets", "dung dang cho snippets", "dun danh cho snippets", "dun dung cho snippets", "dun sang tao 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: (((("dun sang cho snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dun sang cho snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dun sang cho snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dun sang cho snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.