Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban bat cua snippets" » "ban dat cua snippets", "ban tat cua snippets", "san bat cua snippets", "ban ban cua snippets", "ban mat cua snippets", "ban bai cua 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 bat cua 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 bat cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban bat cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban bat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.