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