Perhaps you should try some spelling variations:
"hang java java snippets" » "hang va java snippets"
"dung che ho snippets" » "dung chet ho snippets", "duong che ho snippets", "dung cho ho snippets", "dung che do snippets", "dung he ho snippets", "dung che khoa 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 che ho 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 che ho snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung che ho snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung che ho snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.