Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban dau de snippets" » "bat dau de snippets", "ban dan de snippets", "van dau de snippets", "ban dau ve snippets", "ban dai de snippets", "ban sau de 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 de 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 de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban dau de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban dau de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.