Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu dua hon snippets" » "hieu qua hon snippets", "hieu cua hon snippets", "hieu dia hon snippets", "hieu lua chon snippets", "hieu dua khen 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: (((("hieu dua hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hieu dua hon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu dua hon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu dua hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.