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