Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran nhin ve snippets" » "trang nhin ve snippets", "tran nhan ve snippets", "tran chien ve snippets", "tran nhin viet snippets", "tran nhien va 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: (((("tran nhin 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: (((("tran nhin ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran nhin ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran nhin ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.