Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xen anh dong snippets" » "xen anh huong snippets", "xen anh son snippets", "dien anh dong snippets", "tien anh dong snippets", "xuan anh dong 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: (((("xen anh dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xen anh dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xen anh dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xen anh dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.