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