Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao thoi he snippets" » "dao thi he snippets", "dao thai he snippets", "dao tho he snippets", "dao khoi he snippets", "dao thoi hien snippets", "dao thoai hy 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 thoi he 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 thoi he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao thoi he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao thoi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.