Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh cho ke snippets" » "danh cho he snippets", "danh cho ky snippets", "danh cho xe snippets", "doanh cho ke snippets", "dan cho ke snippets", "dinh cho ke 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 cho ke 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 cho ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh cho ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh cho ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.