Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong tu du snippets" » "cong tu code snippets", "cong ty du snippets", "cong cu du snippets", "dong tu du snippets", "cong tu duy snippets", "cong tu dau snippets", "cong 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: (((("cong 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: (((("cong tu du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong tu du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong tu du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.