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