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