Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac nhan vo snippets" » "ca nhan vo snippets", "cac nha vo snippets", "cam nhan vo snippets", "cac nhan va snippets", "cac nhan mo snippets", "cac than vo 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: (((("cac nhan vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cac nhan vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac nhan vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac nhan vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.