Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bao vien cac snippets" » "bao viet cac snippets", "giao vien cac snippets", "bao thien cac snippets", "bao vien bach snippets", "bao vien dai snippets", "bao 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: (((("bao 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: (((("bao vien cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bao vien cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bao vien cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.