Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh cac di snippets" » "dinh cac di snippets", "danh ca di snippets", "hanh cac di snippets", "danh cac dai snippets", "danh cac dia snippets", "danh cac doi 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 cac di 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 cac di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh cac di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh cac di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.