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