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