Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cau duong he snippets" » "hai duong he snippets", "con duong he snippets", "van duong he snippets", "cau duong che snippets", "cau dung he snippets", "cau duong ve 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: (((("cau duong he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cau duong he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cau duong he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cau duong he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.