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