Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tao song cua snippets" » "tao dong cua snippets", "ta song cua snippets", "tam song cua snippets", "tao cong cua snippets", "tao 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: (((("tao song 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: (((("tao song cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tao song cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tao song cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.