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