Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi phi cho snippets" » "chi phi cho snippets", "phi thi cho snippets", "thi phi cho snippets", "phi choi cho snippets", "phi nhoi cho snippets", "phi phap cho 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 phi cho 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 phi cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi phi cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi phi cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.