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