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