Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"kha trinh he snippets" » "kha trinh code snippets", "qua trinh he snippets", "ha tinh he snippets", "tra trinh he snippets", "kha trinh han snippets", "kha trinh hoa snippets", "kha trinh ky 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 he 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 he snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( kha trinh he snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kha trinh he snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.