Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lieu luu cho snippets" » "hieu luc cho snippets", "lieu lon cho snippets", "lieu tu cho snippets", "lieu luu kho snippets", "lieu luc cho snippets", "lieu uu cho 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 luu cho 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 luu cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lieu luu cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lieu luu cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.