Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua don dep snippets" » "cua dong dep snippets", "cua dan dep snippets", "cua con dep snippets", "cua don den snippets", "cua don dien 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 don dep 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 don dep snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua don dep snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua don dep snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.