Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao khai de snippets" » "cao chat de snippets", "co khi de snippets", "cao tai de snippets", "cao khi de snippets", "cao khoi de snippets", "cao thai den 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: (((("cao khai de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cao khai de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao khai de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao khai de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.