Perhaps you should try some spelling variations:
"dan thiet code snippets" » "dan thiet de snippets", "luan thiet code snippets", "toan thiet code snippets", "doan thien code snippets", "dan thiet code slippers"
"dung cho code snippets" » "dung cho cong snippets", "dung cfd code snippets", "dung cho con snippets", "dung cho 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: (((("dan thiet code snippets") or ("dung cho code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan thiet code snippets") OR ("dung cho code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan thiet code snippets ) or ( dung cho code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan thiet code snippets") or ("dung cho code snippets"))) or ("locating bug code snippets"))*.