Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"moi cong lee snippets" » "noi cong lee snippets", "voi cong lee snippets", "tai cong lee snippets", "moi cong lap snippets", "moi cong li snippets", "moi cong lon 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: (((("moi cong 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: (((("moi cong lee snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( moi cong lee snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("moi cong lee snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.