Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thai viet da snippets" » "thi viet da snippets", "tai viet da snippets", "mai viet da snippets", "thai viet dao snippets", "thai viet dat snippets", "thai viet ha 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: (((("thai viet da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thai viet da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thai viet da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thai viet da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.