Perhaps you should try some spelling variations:
"dang java java snippets" » "dang va java snippets"
"dung san hoi snippets" » "dong san hoi snippets", "dung sai hoi snippets", "dung luan hoi snippets", "dung san choi snippets", "dung dan hoi snippets", "dung san ho 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: (((("dang java java snippets") or ("dung san hoi snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang java java snippets") OR ("dung san hoi snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang java java snippets ) or ( dung san hoi snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang java java snippets") or ("dung san hoi snippets"))) or ("locating bug code snippets"))*.