Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao luat cua snippets" » "dap luat cua snippets", "dan luat cua snippets", "dao luan cua snippets", "dao luat sua snippets", "dao xuat cua snippets", "dao lua cua 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 luat cua 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 luat cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao luat cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao luat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.