Perhaps you should try some spelling variations:
"yang cuong cac snippets" » "tang cuong cac snippets", "dang cuong cac snippets", "quang cuong cac snippets", "yang luong cac snippets", "yang cong cac snippets", "yang trong cac snippets"
"dung java java snippets" » "dung va java 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: (((("yang cuong cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("yang cuong cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( yang cuong cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("yang cuong cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.