Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan dao vo snippets" » "lanh dao vo snippets", "van dao vo snippets", "lan dau vo snippets", "lan dao voi snippets", "lan dao o snippets", "lan dao do 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 vo 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 vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan dao vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan dao vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.