Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"choi doan do snippets" » "choi dan do snippets", "choi hoan do snippets", "chan doan do snippets", "choi doan o snippets", "choi toan do snippets", "choi doanh dao 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: (((("choi doan 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: (((("choi doan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( choi doan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("choi doan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.