Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"co viet xac slippers" » "co viet bac slippers", "co viet sach slippers", "co viet nam slippers", "so viet xac slippers", "o viet xac slippers", "hoc viet xac slippers", "co viet xac slippery", "co viet xac grippers"
"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: (((("co viet xac slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("co viet xac slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( co viet xac slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("co viet xac slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.