Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trieu do voi snippets" » "trien do voi snippets", "trieu dai voi snippets", "trien dot voi snippets", "trieu doi voi snippets", "trieu dao voi snippets", "trieu do moi 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: (((("python using java snippets") or ("trieu do voi snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("trieu do voi snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( trieu do voi snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("trieu do voi snippets"))) or ("locating bug code snippets"))*.