Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan quoc cua snippets" » "dang quoc cua snippets", "han quoc cua snippets", "tran quoc cua snippets", "dan nuoc cua snippets", "dan quoc quan snippets", "dan quoc 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: (((("dan quoc cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan quoc cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan quoc cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan quoc cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.