Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh dan cac snippets" » "danh dau cac snippets", "canh dan cac snippets", "dang dan cac snippets", "danh dan cach snippets", "danh dang cac snippets", "danh dan ca 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: (((("danh dan cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh dan cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh dan cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh dan cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.