Perhaps you should try some spelling variations:
"dung cacfd code snippets" » "dung cac code snippets", "dung cfd code snippets", "dung cacfd code slippers"
"truong va code snippets" » "truong dai code snippets", "truong cao code snippets", "truong dao code snippets", "truong va code slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("truong va code snippets") or ("dung cacfd code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("truong va code snippets") OR ("dung cacfd code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( truong va code snippets ) or ( dung cacfd code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("truong va code snippets") or ("dung cacfd code snippets"))) or ("locating bug code snippets"))*.