Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"trinh nam he snippets" » "trinh nam code snippets", "trinh ngam he snippets", "tinh nam he snippets", "trinh tam he snippets", "trinh nam ha snippets", "trinh nam hien snippets", "trinh nam nghe 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 nam 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 nam he snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( trinh nam he snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh nam he snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.