Perhaps you should try some spelling variations:
"nuoc thi trac snippets" » "nuoc thai trac snippets", "nuoc tai trac snippets", "nuoc chi trac snippets", "nuoc thi tran snippets", "nuoc thi tac snippets", "nuoc thi trang snippets"
"python using a slippers" » "python using a slippery", "python using a grippers"
"locating bug code snippets" » "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.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("nuoc thi trac snippets") or ("python using a slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nuoc thi trac snippets") OR ("python using a slippers"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( nuoc thi trac snippets ) or ( python using a slippers ))) or ( locating bug code snippets ))*.