Perhaps you should try some spelling variations:
"hang java java snippets" » "hang va java snippets"
"dung nha cong snippets" » "dung nhan cong snippets", "dung ha cong snippets", "dung khoa cong snippets", "dung nhap cong snippets", "dung nha cung 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 nha cong 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 nha cong snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung nha cong snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung nha cong snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.