Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuc dan toi snippets" » "thuc hanh toi snippets", "hoc dan toi snippets", "thuc vat toi snippets", "thuc dan toc snippets", "thuc dan thi snippets", "thuc van toi 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: (((("thuc dan toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thuc dan toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuc dan toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuc dan toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.