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