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