Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lieu phuc se snippets" » "lieu hoc se snippets", "lieu phap se snippets", "lieu phuc sen snippets", "lieu phuc su snippets", "lieu phuc le 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 phuc se 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 phuc se snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lieu phuc se snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lieu phuc se snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.