Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"voi quoc can snippets" » "voi cuoc can snippets", "vuon quoc can snippets", "mai quoc can snippets", "voi quoc chan snippets", "voi luoc can snippets", "voi quoc ban 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: (((("voi quoc can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("voi quoc can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( voi quoc can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("voi quoc can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.