Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tho huu toan snippets" » "tho huu tuan snippets", "tho cuu toan snippets", "tho huy toan snippets", "thi huu toan snippets", "tho thuy 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: (((("tho huu 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: (((("tho huu toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tho huu toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tho huu toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.