Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"moi cua voi snippets" » "hoi cua voi snippets", "doi cua voi snippets", "moi quan voi snippets", "moi chua voi snippets", "moi cua vi snippets", "moi 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: (((("moi 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: (((("moi cua voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( moi cua voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("moi cua voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.