Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban dau hoi snippets" » "bat dau hoi snippets", "ban dan hoi snippets", "van dau hoi snippets", "ban cau hoi snippets", "ban dai hoi 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: (((("ban dau hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ban dau hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban dau hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban dau hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.