Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cho minh can snippets" » "cho minh code snippets", "chi minh can snippets", "cho sinh can snippets", "cao minh can snippets", "cho minh chanh snippets", "cho minh danh snippets", "cho minh tuan 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: (((("cho minh can snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho minh can snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cho minh can snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho minh can snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.