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