Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mang hoc can snippets" » "nang hoc can snippets", "bang hoc can snippets", "mang loc can snippets", "mang hoc dan snippets", "mang hoc cao snippets", "mang hoc cac snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("mang hoc can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mang hoc can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mang hoc can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mang hoc can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.