Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mon huy toan snippets" » "mon huy tran snippets", "mon huu toan snippets", "mon huy hoang snippets", "dong huy toan snippets", "minh huy toan 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: (((("mon huy toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mon huy toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mon huy toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mon huy toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.