Perhaps you should try some spelling variations:
"van chuc danh snippets" » "van chuc nganh snippets", "van thuc hanh snippets", "van chuc nang snippets", "van khuc danh snippets", "van phuc danh snippets", "van thuc danh snippets", "van chuc danh slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("van chuc danh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van chuc danh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van chuc danh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van chuc danh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.