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