Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan thi coc snippets" » "dang thi coc snippets", "tran thi coc snippets", "dinh thi coc snippets", "dan thi cuc snippets", "dan thi voc snippets", "dan thi goc 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: (((("dan thi coc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan thi coc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan thi coc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan thi coc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.