Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao manh noi snippets" » "dao hanh noi snippets", "dao minh noi snippets", "day manh noi snippets", "dao anh noi snippets", "dao mang noi 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: (((("dao manh noi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao manh noi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao manh noi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao manh noi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.