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