Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lieu tu che snippets" » "lieu tai che snippets", "tieu thu che snippets", "kieu thu che snippets", "lieu tu chu snippets", "lieu tu chi snippets", "lieu ty che 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 tu che 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 tu che snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lieu tu che snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lieu tu che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.