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