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