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