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