Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han danh di snippets" » "van danh di snippets", "phan dang di snippets", "nhan dang di snippets", "han danh du snippets", "han xanh di snippets", "han danh dien 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: (((("han danh di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han danh di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han danh di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han danh di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.