Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doc phan ve snippets" » "doc phan code snippets", "hoc phan ve snippets", "duc phan ve snippets", "doc than ve snippets", "doc phan le snippets", "doc phan va snippets", "doc pha ve 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 ve 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 ve snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doc phan ve snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc phan ve snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.