Perhaps you should try some spelling variations:
"hang java java snippets" » "hang va java snippets"
"dung linh chi snippets" » "duong linh chi snippets", "dung ninh chi snippets", "dung vinh chi snippets", "dung dinh chi snippets", "dung minh chi snippets", "dung linh chinh 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: (((("hang java java snippets") or ("dung linh chi snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang java java snippets") OR ("dung linh chi snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang java java snippets ) or ( dung linh chi snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang java java snippets") or ("dung linh chi snippets"))) or ("locating bug code snippets"))*.