Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don ta cau snippets" » "don tam cau snippets", "don tai cau snippets", "don va cau snippets", "don tao cau snippets", "don tra cau 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: (((("don ta cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("don ta cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don ta cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don ta cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.