Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"viet qua te snippets" » "vien quan te snippets", "ket qua te snippets", "viet ha te snippets", "viet cua te snippets", "viet qua tieu 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: (((("viet qua te snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("viet qua te snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( viet qua te snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet qua te snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.