Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"bui ngoc dan snippets" » "thi ngoc dan snippets", "vu ngoc dan snippets", "mai ngoc dan snippets", "bui ngoc dang snippets", "bui ngoc lan snippets", "bui ngoc tan 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: (((("bui ngoc dan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bui ngoc dan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( bui ngoc dan snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bui ngoc dan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.