Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"da dieu chan snippets" » "da dieu can snippets", "da tieu chuan snippets", "da dieu chinh snippets", "va dieu chan snippets", "dang dieu chan snippets", "doan dieu chan 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: (((("da dieu chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("da dieu chan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( da dieu chan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("da dieu chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.