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