Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"can quan cua snippets" » "van quan cua snippets", "ban quan cua snippets", "dan quan cua snippets", "can quan luan snippets", "can ban cua snippets", "can gian 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: (((("can quan 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: (((("can quan cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can quan cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can quan cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.