Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban voi cay snippets" » "ban moi cay snippets", "ba voi cay snippets", "ban noi cay snippets", "ban voi cac snippets", "ban voi can snippets", "ban doi cay 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 voi cay 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 voi cay snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban voi cay snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban voi cay snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.