Perhaps you should try some spelling variations:
"nhung hoi trach snippets" » "nhung thoi trach snippets", "nhung loi trach snippets", "nhung noi trach snippets", "nhung hoi trac snippets", "nhung bo trach snippets", "nhung co trach snippets", "nhung hoi trach 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: (((("nhung hoi trach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhung hoi trach snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhung hoi trach snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhung hoi trach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.