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