Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran tuan vo snippets" » "tran xuan vo snippets", "tran quang vo snippets", "tran thanh vo snippets", "tran than vo snippets", "tran tuan do snippets", "tran toan von 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 tuan 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: (((("tran tuan vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran tuan vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran tuan vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.