Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sat vien cac snippets" » "sat viec cac snippets", "sat bien cac snippets", "soat viem cac snippets", "sat vien bach snippets", "sat vien dai snippets", "sat vien da 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: (((("sat vien cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sat vien cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sat vien cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sat vien cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.