Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban tat hong snippets" » "ban tat thuong snippets", "ban tran hong snippets", "ban tat thang snippets", "ban tai hong snippets", "ban dat hong snippets", "ban tay hong 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 tat hong 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 tat hong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban tat hong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban tat hong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.