Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quan doan ve snippets" » "quan hoang ve snippets", "chuan doan ve snippets", "chan doan ve snippets", "quan doan va snippets", "quan doan vi snippets", "quan toan ve 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: (((("quan doan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quan doan ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan doan ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan doan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.