Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phau hoc can snippets" » "phap hoc can snippets", "thai hoc can snippets", "nha hoc can snippets", "phau hoc dan snippets", "phau hoc cao snippets", "phau 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: (((("phau 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: (((("phau hoc can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phau hoc can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phau hoc can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.