Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tu xuan co snippets" » "tu luan co snippets", "tu xuat co snippets", "vu xuan co snippets", "tu xuan ho snippets", "tu quan co snippets", "tu xuan can 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: (((("tu xuan co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tu xuan co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tu xuan co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tu xuan co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.