Perhaps you should try some spelling variations:
"dong cac code snippets" » "duong cac code snippets", "dong bac code snippets", "dung cac code snippets", "dong cac cong snippets", "dong cac co snippets", "dong cac che snippets"
"cong va code snippets" » "dong va code snippets", "cong ha code snippets", "cong tac 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 cac code snippets") or ("cong va code snippets"))) or ("locating bug code slippers"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong cac code snippets") OR ("cong va code snippets"))) OR ("locating bug code slippers")).
• Removing quotes may allow a broader search: (((( dong cac code snippets ) or ( cong va code snippets ))) or ( locating bug code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("dong cac code snippets") or ("cong va code snippets"))) or ("locating bug code slippers"))*.