Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu dieu cac snippets" » "thuat dieu cac snippets", "thu hien cac snippets", "he dieu cac snippets", "thu dieu can snippets", "thu hieu cac snippets", "thu dien cac 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: (((("thu dieu cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu dieu cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu dieu cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu dieu cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.