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