Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung lam roi snippets" » "dung luan roi snippets", "dung tai roi snippets", "dung dat roi snippets", "dung lai roi snippets", "dung lam thoi 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: (((("dung lam roi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung lam roi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung lam roi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung lam roi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.