Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc danh di snippets" » "hoc dan di snippets", "hoc anh di snippets", "hoc hanh di snippets", "hoc danh du snippets", "hoc xanh di snippets", "hoc 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: (((("hoc 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: (((("hoc danh di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc danh di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc danh di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.