Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"trinh moi he snippets" » "trinh moi code snippets", "trinh hoi he snippets", "trinh boi he snippets", "trinh mo he snippets", "trinh moi ve snippets", "trinh moi ke snippets", "trinh moi de 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: (((("trinh moi he snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh moi he snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( trinh moi he snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh moi he snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.