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