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