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