Perhaps you should try some spelling variations:
"thi hoan dan snippets" » "thi hoa dan snippets", "thi hoang dang snippets", "thi khoan danh snippets", "thi hanh dan snippets", "thi hong dan snippets", "thi hoan dan slippers"
"python using a snippets" » "python using a slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("python using a snippets") or ("thi hoan dan snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using a snippets") OR ("thi hoan dan snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using a snippets ) or ( thi hoan dan snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using a snippets") or ("thi hoan dan snippets"))) or ("locating bug code snippets"))*.