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