Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"rat chieu ke snippets" » "rat nhieu ke snippets", "nhat chieu ke snippets", "dat hieu ke snippets", "rat hieu ky snippets", "rat hieu ve snippets", "rat hieu kem 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: (((("rat chieu ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("rat chieu ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( rat chieu ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("rat chieu ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.