Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"coc day cho snippets" » "coc dat cho snippets", "con day cho snippets", "hoc day cho snippets", "coc dac cho snippets", "coc danh 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: (((("coc day 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: (((("coc day cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( coc day cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("coc day cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.