Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hang phan ke snippets" » "hang phat ke snippets", "nang phan ke snippets", "hang pham ke snippets", "hang phan le snippets", "hang phan ve snippets", "hang phan ky 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: (((("hang phan ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang phan ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang phan ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang phan ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.