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