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