Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc ban cau snippets" » "duc ban cau snippets", "quoc ban cau snippets", "buoc ban cau snippets", "duoc bang cau snippets", "duoc ban can snippets", "duoc van cau 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: (((("duoc ban cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duoc ban cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc ban cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc ban cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.