Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khai toan do snippets" » "khai tuan do snippets", "khai hoan do snippets", "khi toan do snippets", "khai toan ho snippets", "khai toan co snippets", "khai toan du 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: (((("khai toan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khai toan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khai toan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khai toan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.