Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong van toi snippets" » "cong van code snippets", "cong vang toi snippets", "cong san toi snippets", "song van toi snippets", "cong van tai snippets", "cong van thi snippets", "cong van toan 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 van toi 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 van toi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong van toi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong van toi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.