Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"can van lee snippets" » "cac van lee snippets", "can ban lee snippets", "tan van lee snippets", "can van le snippets", "can han lee snippets", "can tan lee 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: (((("can van 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: (((("can van lee snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can van lee snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can van lee snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.