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