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