Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh de cua snippets" » "hanh de cua snippets", "dan de cua snippets", "dang de cua snippets", "danh le cua snippets", "danh te cua snippets", "danh dieu cua 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 de cua 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 de cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh de cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh de cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.