Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"qua giang le snippets" » "cua giang le snippets", "ha giang le snippets", "qua gia le snippets", "qua gian le snippets", "qua giang ve snippets", "qua giang lam 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: (((("qua giang 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: (((("qua giang le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua giang le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua giang le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.