Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xon dong cua snippets" » "cong dong cua snippets", "con duong cua snippets", "song dong cua snippets", "xon dung cua snippets", "xon cong cua snippets", "xon huong cua 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: (((("xon dong cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xon dong cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xon dong cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xon dong cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.