Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi dung moc snippets" » "thi huong moc snippets", "thi nhung moc snippets", "thi cong moc snippets", "thi dung mo snippets", "thi dung hoc snippets", "thi dung mot 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: (((("thi dung moc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi dung moc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi dung moc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi dung moc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.