Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cuoi doan do snippets" » "cuoi dan do snippets", "chuoi xoan do snippets", "cuoi van do snippets", "cuoi doan o snippets", "cuoi toan do snippets", "cuoi doanh dao 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: (((("cuoi doan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cuoi doan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuoi doan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuoi doan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.