Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dan hang cau snippets" » "ban hang cau snippets", "van hang cau snippets", "dat hang cau snippets", "dan hang dau snippets", "dan hang ca snippets", "dan nhung cau 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: (((("dan hang cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan hang cau snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan hang cau snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan hang cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.