Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong goi cau snippets" » "dong hoi cau snippets", "dung goi cau snippets", "cong goi cau snippets", "dong gioi cau snippets", "dong goi dau 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: (((("dong goi 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: (((("dong goi cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong goi cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong goi cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.