Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc dao cung snippets" » "doc dao cuong snippets", "doc dao vung snippets", "doc dao nung snippets", "toc dao cung snippets", "duc dao cung snippets", "hoc dao cung 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: (((("doc dao cung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc dao cung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc dao cung snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc dao cung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.