Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hanh van bon snippets" » "thanh van bon snippets", "khanh van bon snippets", "hanh va bon snippets", "hanh van ban snippets", "hanh van dong snippets", "hanh van cong 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: (((("hanh van bon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hanh van bon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hanh van bon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hanh van bon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.