Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cay xanh son snippets" » "cay lanh son snippets", "cao anh son snippets", "day manh son snippets", "cay anh son snippets", "cay thanh son snippets", "cay khanh son 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: (((("cay xanh son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cay xanh son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cay xanh son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cay xanh son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.