Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"nen trinh co snippets" » "nen trinh code snippets", "nen tranh co snippets", "tien trinh co snippets", "nen kinh co snippets", "nen trinh do snippets", "nen trinh cong snippets", "nen trinh hoa 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: (((("nen trinh co snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nen trinh co snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( nen trinh co snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nen trinh co snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.