Perhaps you should try some spelling variations:
"python using code snippets" » "python using cfd snippets", "python using one snippets", "python using code slippers"
"phuc cac van snippets" » "phuc cam van snippets", "phuc ca van snippets", "phuc cham van snippets", "phuc cac dan snippets", "phuc cac van slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("phuc cac van snippets") or ("python using code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phuc cac van snippets") OR ("python using code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phuc cac van snippets ) or ( python using code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phuc cac van snippets") or ("python using code snippets"))) or ("locating bug code snippets"))*.