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