Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan luat le snippets" » "phap luat le snippets", "phan xuat le snippets", "phan lap le snippets", "phan luat ve snippets", "phan luat ke snippets", "phan luat de 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: (((("phan luat 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: (((("phan luat le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan luat le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan luat le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.