Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hai cua voi snippets" » "thai cua voi snippets", "hoi cua voi snippets", "dai cua voi snippets", "hai chua voi snippets", "hai cua vi snippets", "hai cua hoi 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: (((("hai cua voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hai cua voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hai cua voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai cua voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.