Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lua van hoe snippets" » "luan van hoe snippets", "luu van hoe snippets", "qua van hoe snippets", "lua van hoa snippets", "lua van hoc snippets", "lua van hieu 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: (((("lua van hoe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lua van hoe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lua van hoe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lua van hoe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.