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