Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dau cuoi duc snippets" » "dam cuoi duc snippets", "dau co duc snippets", "dao cuoc duc snippets", "dau cuoi dac snippets", "dau cuoi nuoc snippets", "dau cuoi thuc 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: (((("dau cuoi duc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dau cuoi duc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dau cuoi duc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dau cuoi duc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.