Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hung tran ve snippets" » "huong tran ve snippets", "quang tran ve snippets", "hung thang ve snippets", "hung tran vu snippets", "hung toan ve snippets", "hung tran v 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: (((("hung tran ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hung tran ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hung tran ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hung tran ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.