Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"doi trinh 30 snippets" » "doc trinh 30 snippets", "doi tinh 30 snippets", "dong trinh 30 snippets", "doi tranh 30 snippets", "doi trinh ky snippets", "doi trinh do 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 trinh 30 snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi trinh 30 snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doi trinh 30 snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi trinh 30 snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.