Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vung hat le snippets" » "vung dat le snippets", "dung chat le snippets", "dung nhat le snippets", "vung nhat le snippets", "vung hat de snippets", "vung hat ke 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: (((("vung hat le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vung hat le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vung hat le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vung hat le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.