Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tong cuc cua snippets" » "tong cuc code snippets", "trong cuoc cua snippets", "thong cua cua snippets", "cong chuc cua snippets", "tong chuc cua snippets", "tong cu cua snippets", "tong cac 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: (((("tong cuc 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: (((("tong cuc cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tong cuc cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tong cuc cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.