Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong dai hoi snippets" » "cong dai code snippets", "cong dan hoi snippets", "cong hai hoi snippets", "cong da hoi snippets", "cong dai hoc snippets", "cong dai hai snippets", "cong dai 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 dai 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 dai hoi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong dai hoi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong dai hoi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.