Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi chinh ke snippets" » "do chinh ke snippets", "tai chinh ke snippets", "hoc chinh ke snippets", "doi chinh che snippets", "doi chinh ta snippets", "doi chinh va 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: (((("doi chinh ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi chinh ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi chinh ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi chinh ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.