Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"moi vao son snippets" » "moi va son snippets", "moi van son snippets", "moi giao son snippets", "moi cao son snippets", "moi tao 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: (((("moi vao 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: (((("moi vao son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( moi vao son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("moi vao son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.