Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tac danh cua snippets" » "tac danh code snippets", "sach danh cua snippets", "cac doanh cua snippets", "cac dan cua snippets", "tac doanh cua snippets", "tac manh cua snippets", "tac dinh cua 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: (((("tac danh cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tac danh cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tac danh cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tac danh cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.