Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don tra cau snippets" » "dan tra cau snippets", "dong tri cau snippets", "con trai cau snippets", "don tra sau snippets", "don ta cau snippets", "don tra cuu 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 tra 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 tra cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don tra cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don tra cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.