Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"may xuan can snippets" » "mai xuan can snippets", "may san can snippets", "dao xuan can snippets", "may xuan cang snippets", "may xuan tan snippets", "may xuan chanh 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: (((("may xuan 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: (((("may xuan can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( may xuan can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("may xuan can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.