Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cao tu doi snippets" » "cao tu code snippets", "cao thu doi snippets", "co tu doi snippets", "cao su doi snippets", "cao tu do snippets", "cao te doi snippets", "cao tu di 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 tu doi 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 tu doi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cao tu doi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao tu doi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.