Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh dat cua snippets" » "danh bat cua snippets", "dinh dat cua snippets", "dan dat cua snippets", "danh dai cua snippets", "danh day cua snippets", "danh mat 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 dat 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 dat cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh dat cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh dat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.