Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc tham o snippets" » "luc tam o snippets", "duc tham o snippets", "luc thap o snippets", "luc tham do snippets", "luc cham o 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: (((("luc tham o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc tham o snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc tham o snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc tham o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.