Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xuan huy can snippets" » "quang huy can snippets", "qua huy can snippets", "van huy can snippets", "xuan duy can snippets", "xuan thuy canh snippets", "xuan huy tran 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 huy can 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 huy can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xuan huy can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xuan huy can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.