Perhaps you should try some spelling variations:
"hang java java snippets" » "hang va java snippets"
"dung ung cham snippets" » "dung trung cham snippets", "dung quang cham snippets", "dung chung cham snippets", "dung duong cham snippets", "dung dung chat snippets", "dung nang cham 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 ung cham 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 ung cham snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung ung cham snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung ung cham snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.