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