Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quoc viet da snippets" » "nuoc viet da snippets", "hoc viet da snippets", "ngoc viet da snippets", "quoc viet dao snippets", "quoc viet dat snippets", "quoc 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: (((("quoc 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: (((("quoc viet da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quoc viet da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quoc viet da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.