Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"che quang le snippets" » "chu quang le snippets", "che quan le snippets", "khe quang le snippets", "che quang yen snippets", "che quan ly snippets", "che quan li 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: (((("che quang 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: (((("che quang le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( che quang le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("che quang le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.