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 hoc dao snippets" » "triet hoc dao snippets", "tri thuc dao snippets", "thai hoc dao snippets", "tri hoc dan snippets", "tri hoc cao snippets", "tri hoc 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 hoc dao snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( python using code snippets ) or ( tri hoc dao snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using code snippets") or ("tri hoc dao snippets"))) or ("locating bug core snippets"))*.