Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hai quan lee snippets" » "tac quan lee snippets", "hai quan ly snippets", "hai quan li snippets", "hai quan he 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: (((("hai quan lee snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hai quan lee snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hai quan lee snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai quan lee snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.