Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan dao le snippets" » "phan dau le snippets", "phan dai le snippets", "phan day le snippets", "phan do le snippets", "phan dao ve snippets", "phan hao le 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 dao 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 dao le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan dao le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan dao le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.