Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xuan son du snippets" » "xuan toan du snippets", "xuan sinh du snippets", "xuan hoan du snippets", "xuan song du snippets", "xuan ton du snippets", "xuan 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: (((("xuan 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: (((("xuan son du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xuan son du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xuan son du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.