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