Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han van cho snippets" » "phan van cho snippets", "nhan van cho snippets", "hanh van cho snippets", "han van chi snippets", "han san cho snippets", "han van chat 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: (((("han van 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: (((("han van cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han van cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han van cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.