Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"can tang cua snippets" » "cao tang cua snippets", "can bang cua snippets", "ca tang cua snippets", "can mang cua snippets", "can hang cua snippets", "can tang luan 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 tang 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 tang cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can tang cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can tang cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.