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