Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran dua voi snippets" » "tran duc voi snippets", "tran duy voi snippets", "tranh cua voi snippets", "tran da voi snippets", "tran dua moi snippets", "tran sua voi 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: (((("tran dua 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: (((("tran dua voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran dua voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran dua voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.