Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban vu cho snippets" » "ban va cho snippets", "ban ve cho snippets", "ban tu cho snippets", "ban vu cao snippets", "ban cu cho snippets", "ban uu 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 vu 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 vu cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban vu cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban vu cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.