Perhaps you should try some spelling variations:
"thi tuong dan snippets" » "thi huong dan snippets", "thi tung dan snippets", "thi xuong dan snippets", "thi truong dan snippets", "thi thuong dan snippets", "thi tuong 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"

You may be able to get more results by adjusting your search query.

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