Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"pham tu du snippets" » "pham tu code snippets", "phan tu du snippets", "pham thi du snippets", "pham tai du snippets", "pham tu duy snippets", "pham tu dau snippets", "pham tru du 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: (((("pham tu du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham tu du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( pham tu du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham tu du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.