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