Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"viet duoi ho snippets" » "viet doi ho snippets", "viet duong ho snippets", "viet dung ho snippets", "viet duoc hoc snippets", "viet duoc hoi snippets", "viet duoi goc 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: (((("viet duoi ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("viet duoi ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( viet duoi ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet duoi ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.