Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"viet tap can snippets" » "viet ta can snippets", "viet tay can snippets", "viet gap can snippets", "viet tap van snippets", "viet tap cac snippets", "viet tac can 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 tap can 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 tap can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( viet tap can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet tap can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.