Perhaps you should try some spelling variations:
"dung nghe cnc snippets" » "dang nghe cnc snippets", "dung nghien cnc snippets", "cuong nghe cnc snippets", "dung nghe cong snippets", "dung nghe che snippets", "dung nghe co snippets"
"using a code snippets" » "using a core snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code 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: (((("using a code snippets") or ("dung nghe cnc snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using a code snippets") OR ("dung nghe cnc snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using a code snippets ) or ( dung nghe cnc snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using a code snippets") or ("dung nghe cnc snippets"))) or ("locating bug code snippets"))*.