Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van tam hoa snippets" » "van tham hoa snippets", "van tai hoa snippets", "van tan hoa snippets", "van tap hoa snippets", "van tam hon 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: (((("van tam hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van tam hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van tam hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van tam hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.