Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hao minh can snippets" » "hao minh code snippets", "cao minh can snippets", "dao minh can snippets", "ha minh can snippets", "hao minh chanh snippets", "hao minh danh snippets", "hao 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: (((("hao 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: (((("hao minh can snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hao minh can snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hao minh can snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.