Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dan cua doc snippets" » "dan cua code snippets", "dan ca doc snippets", "ban cua doc snippets", "dai cua doc snippets", "dan cua duoc snippets", "dan cua duc snippets", "dan cua hoc 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: (((("dan cua doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan cua doc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dan cua doc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan cua doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.