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