Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua duc cong snippets" » "cua duc cuong snippets", "cua dung cong snippets", "cua nuoc cong snippets", "cua tuc cong snippets", "cua quoc cong 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: (((("cua duc cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua duc cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua duc cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua duc cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.