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