Perhaps you should try some spelling variations:
"hoc can doan snippets" » "hoc can code snippets", "hoc chan doan snippets", "hoc tan doan snippets", "hoc van doan snippets", "hoc dan doan snippets", "hoc cao doan snippets", "hoc cac doan snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("python using java snippets") or ("hoc can doan snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("hoc can doan snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( hoc can doan snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("hoc can doan snippets"))) or ("locating bug core snippets"))*.