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