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