Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tien cong o2 snippets" » "thien cong o2 snippets", "trien cong o2 snippets", "tien luong o2 snippets", "tien cong 92 snippets", "tien cong o snippets", "tien cong hoa 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: (((("tien cong o2 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tien cong o2 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tien cong o2 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tien cong o2 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.