Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao xuan cac snippets" » "do xuan cac snippets", "ngo xuan cac snippets", "dao van cac snippets", "dao xuan can snippets", "dao xuat cac snippets", "dao xuan bach 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: (((("dao xuan cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao xuan cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao xuan cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao xuan cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.