Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quoc son du snippets" » "cuoc song du snippets", "nuoc song du snippets", "quoc toan du snippets", "quoc song du snippets", "quoc ton du snippets", "quoc son d 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: (((("quoc son du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quoc son du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quoc son du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quoc son du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.