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