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