Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quoc lan da snippets" » "quoc ban da snippets", "nuoc luan da snippets", "quoc quan da snippets", "quoc lan dau snippets", "quoc lan dac snippets", "quoc lan dan 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: (((("python using java snippets") or ("quoc lan da snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("quoc lan da snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( quoc lan da snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("quoc lan da snippets"))) or ("locating bug code snippets"))*.