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