Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"qua cuu tong snippets" » "qua cuu cong snippets", "qua cuu long snippets", "qua cuu tinh snippets", "qua cua tong snippets", "qua cu tong snippets", "cua cuu tong 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: (((("qua cuu tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("qua cuu tong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua cuu tong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua cuu tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.