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