Perhaps you should try some spelling variations:
"python using code snippets" » "python using cfd snippets", "python using one snippets"
"locating bug core snippets" » "locating bug code snippets"
"tri cac dao snippets" » "tri mac dao snippets", "tai cac dao snippets", "tri dac dao snippets", "tri cac dan snippets", "tri ca dao snippets", "tri cac dai 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 code snippets") OR ("tri cac dao snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( python using code snippets ) or ( tri cac dao snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using code snippets") or ("tri cac dao snippets"))) or ("locating bug core snippets"))*.