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