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