Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nan banh chi snippets" » "ban banh chi snippets", "nang danh chi snippets", "nang hanh chi snippets", "nan danh cho snippets", "nan dinh chi snippets", "nan bao chi 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: (((("nan banh chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nan banh chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nan banh chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nan banh chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.