Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tuan toan de snippets" » "xuan toan de snippets", "tuan hoan de snippets", "thanh toan de snippets", "tuan toan du snippets", "tuan toan ke snippets", "tuan toan ve 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: (((("tuan toan de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tuan toan de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tuan toan de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tuan toan de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.