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