Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban ham cho snippets" » "ba ham cho snippets", "ban hang cho snippets", "ban hanh cho snippets", "ban han cho snippets", "ban lam cho snippets", "ban nam cho 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: (((("ban ham cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ban ham cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban ham cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban ham cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.