Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao nang den snippets" » "cao dang den snippets", "cam nang den snippets", "cao tang den snippets", "cao nang dan snippets", "cao nang dong snippets", "cao nang danh 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 nang den 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 nang den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao nang den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao nang den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.