Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong lang du snippets" » "cong lang code snippets", "cong vang du snippets", "cong luong du snippets", "cong quang du snippets", "cong lang duc snippets", "cong nang du snippets", "cong tang 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 lang 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 lang du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong lang du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong lang du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.