Perhaps you should try some spelling variations:
"dong huong code snippets" » "dong thuong code snippets", "dong duong code snippets", "cong huong code snippets", "dong huong co snippets", "dong huong com snippets"
"dung du code snippets" » "dung de code snippets", "dung cu code snippets", "dung cua code snippets"
"locating bug code slippers" » "locating bung code slippers", "locating bugs code slippers"

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 huong code snippets") or ("dung du code snippets"))) or ("locating bug code slippers"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong huong code snippets") OR ("dung du code snippets"))) OR ("locating bug code slippers")).
• Removing quotes may allow a broader search: (((( dong huong code snippets ) or ( dung du code snippets ))) or ( locating bug code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("dong huong code snippets") or ("dung du code snippets"))) or ("locating bug code slippers"))*.